Contribution.md updated using script.

Refer to the script:
https://booting.oniroproject.org/distro/docs/-/tree/main/contributing
https://booting.oniroproject.org/distro/docs/-/blob/main/contributing


/CONTRIBUTING.sh

Instructions:

At terminal, navigate to the repository root & generate it by executing:

`$contributing/CONTRIBUTING.sh -o ./CONTRIBUTING.md`

Signed-off-by: NawabAhmad <nawab.ahmad.reshi@huawei.com>


(cherry picked from commit 373ca3f2369c58e65a9e290d4cebe4bd71a566bd)

CONTRIBUTING.md

@@ -6,25 +6,100 @@ SPDX-License-Identifier: CC-BY-4.0
 
 -   [Gitlab contributions](#gitlab-contributions)
     -   [Overview](#overview)
+    -   [Commit Guidelines](#commit-guidelines)
+    -   [Contributions to Documentation](#contributions-to-documentation)
 -   [REUSE compliance](#reuse-compliance)
     -   [SPDX information and REUSE standard](#spdx-information-and-reuse-standard)
         -   [SPDX header example](#spdx-header-example)
         -   [Substantial contributions](#substantial-contributions)
 -   [DCO sign-off](#dco-sign-off)
     -   [Overview](#overview-1)
-    -   [Developer Certificate of Origin](#developer-certificate-of-origin)
+    -   [Developer Certificate of Origin](#docs_dco)
 
 # Gitlab contributions
 
 ## Overview
 
-The Oniro Project handles contributions as [merge requests](https://docs.gitlab.com/ee/user/project/merge_requests/) to relevant repositories part of the Oniro Project [GitLab instance](https://booting.oniroproject.org/distro). The flow for handling that is classic: fork-based merge requests. This means that once you have an account, you can fork any repository, create a branch with proposed changes and raise a merge request against the forked repository. More generic information you can find on the Gitlab's documentation as part of ["Merge requests workflow"](https://docs.gitlab.com/ee/development/contributing/merge_request_workflow.html).
+Oniro Project project handles contributions as [merge requests](https://docs.gitlab.com/ee/user/project/merge_requests/) to relevant repositories part of the Oniro Project [GitLab instance](https://booting.oniroproject.org/distro/oniro). The flow for handling that is classic: fork-based merge requests. This means that once you have an account, you can fork any repository, create a branch with proposed changes and raise a merge request against the forked repository. More generic information you can find on the Gitlab's documentation as part of ["Merge requests workflow"](https://docs.gitlab.com/ee/development/contributing/merge_request_workflow.html).
+
+## Commit Guidelines
+
+<div class="note">
+
+<div class="title">
+
+Note
+
+</div>
+
+If you are new to `git`, start by reading the official [Getting Started Document](https://git-scm.com/book/en/v2/Getting-Started-First-Time-Git-Setup).
+
+</div>
+
+At its core, contributing to the Oniro Project project means *wrapping* your work as `git` commits. How we handle this has an impact on rebasing, cherry-picking, back-porting, and ultimately exposing consistent documentation through its logs.
+
+To achieve this, we maintain the following commit guidelines:
+
+-   Each commit should be able to stand by itself providing a building block as part of the MR.
+    -   A good balance of granularity with scoped commits helps to handle backports (e.g. cherry-picks) and also improves the ability to review smaller chunks of code taking commit by commit.
+-   Changes that were added on top of changes introduced in the MR, should be squashed into the initial commit.
+    -   For example, a MR that introduced a new build system recipe and, as a separate commit, fixed a build error in the initial recipe. The latter commit should be squashed into the initial commit.
+    -   For example, a MR introducing a new docs chapter and also adding, as a separate commit, some typo fixes. The latter commits should be squashed into the initial commit.
+    -   There is a small set of exceptions to this rule. All these exceptions gravitate around the case where an MR, even if it provides multiple commits in the same scope (for example, to the same build recipe), each of the commits has a very specific purpose.
+        -   For example, a line formating change followed by a chapter addition change in the same documentation file.
+        -   Also, it can be the case of two functional changes that are building blocks in the same scope.
+        -   Another example where commits are not to be squashed is when having a commit moving the code and a commit modifying the code in the new location.
+-   Make sure you clean your code of trailing white spaces/tabs and that each file ends with a new line.
+-   Avoid *merge* commits as part of your MR. Your commits should be rebased on top of the *HEAD* of the destination branch.
+
+As mentioned above, *git log* becomes informally part of the documentation of the product. Maintaining consistency in its format and content improves debugging, auditing, and general code browsing. To achieve this, we also require the following commit message guidelines:
+
+-   The *subject* line (the first line) needs to have the following format: `scope: Title limited to 80 characters`.
+    -   Use the imperative mood in the *subject* line for the *title*.
+    -   The *scope* prefix (including the colon and the following whitespace) is optional but most of the time highly recommended. For example, fixing an issue for a specific build recipe, would use the recipe name as the *scope*.
+    -   The *title* (the part after the *scope*) starts with a capital letter.
+    -   The entire *subject* line shouldn't exceed 80 characters (same text wrapping rule for the commit body).
+-   The commit *body* separated by an empty line from the *subject* line.
+    -   The commit *body* is optional but highly recommended. Provide a clear, descriptive text block that accounts for all the changes introduced by a specific commit.
+    -   The commit *body* must not contain more than 80 characters per line.
+-   The commit message will have the commit message *trailers* separated by a new line from the *body*.
+    -   Each commit requires at least a *Signed-off-by* trailer line. See more as part of the `/contributing/dco` document.
+    -   All *trailer* lines are to be provided as part of the same text block - no empty lines in between the *trailers*.
+
+Additional commit message notes:
+
+-   Avoid using special characters anywhere in the commit message.
+-   Be succinct but descriptive.
+-   Have at least one *trailer* as part of each commit: *Signed-off-by*.
+-   You can automatically let `git` add the *Signed-off-by* by taking advantage of its `-s` argument.
+-   Whenever in doubt, check the existing log on the file (`<FILE>`) you are about to commit changes, using something similar to: `git log <FILE>`.
+
+Example of a full git message:
+
+``` text
+busybox: Add missing dependency on virtual/crypt
+
+Since version 1.29.2, the busybox package requires virtual/crypt. Add this
+to DEPENDS to make sure the build dependency is satisfied.
+
+Signed-off-by: Joe Developer <joe.developer@example.com>
+```
+
+## Contributions to Documentation
+
+In Oniro Project, the documentation usually stays with the respective code repositories. This means that contributing to documentation is not in any way different than contributing to code. The processes, contribution guidelines are to remain the same. The only difference is that documentation files are to be released under `Creative Commons License version 4.0`.
+
+Documentation that doesn't link directly to one specific repository, is available in the [docs repository](https://booting.oniroproject.org/distro/docs).
+
+In terms of file format, the project unifies its documentation as `ReStructuredText` files. A RestructuredText primer is available as part of the Sphinx [documentation](https://www.sphinx-doc.org/en/master/usage/restructuredtext/basics.html).
+
+As a rule of thumb, anything that ends up compiled in the project documentation is to maintain the RestructuredText file format. Text files that are not meant to be compiled as part of the project's documentation can be written in [Markdown](https://daringfireball.net/projects/markdown/). For example, a repository `README` file can be written in Markdown as it doesn't end up compiled in the project-wide documentation.
 
 # REUSE compliance
 
 ## SPDX information and REUSE standard
 
-All projects and files for an hosted project **MUST** be [REUSE](https://reuse.software/) compliant. REUSE requires [SPDX](https://spdx.dev/) information for each file, rules for which are as follows:
+All projects and files for an hosted project **MUST** be [REUSE](https://reuse.software/) compliant. REUSE requires SPDX information for each file, rules for which are as follows:
 
 -   Any new file must have a SPDX header (copyright and license).
 -   For files that don't support headers (for example binaries, patches etc.) an associated `.license` file must be included with the relevant SPDX information.
@@ -52,13 +127,13 @@ Make sure all of your submitted new files have a licensing statement in the head
 
 ### Substantial contributions
 
-Therefore, if your contribution is only a patch directly applied to an existing file, then you are not required to do anything. If your contribution is an entire new project, or a substantial, copyrighted contribution, you **MUST** make sure that you do that following the [IP Policy](https://booting.oniroproject.org/distro/governance/ip-policy/-/blob/dev/policy/source/sections/section05.rst) and that you comply with REUSE standard to include the licensing information where they are required.
+Therefore, if your contribution is only a patch directly applied to an existing file, then you are not required to do anything. If your contribution is an entire new project, or a substantial, copyrighted contribution, you **MUST** make sure that you do that following the [IP Policy](https://booting.oniroproject.org/distro/governance/ip-policy) and that you comply with REUSE standard to include the licensing information where they are required.
 
 # DCO sign-off
 
 ## Overview
 
-Commits **MUST** be submitted only with a sign-off by the submitter. A commit without a sign-off will be automatically rejected. You need not be the author or the copyright holder of the contribution, but you must make sure that you have the power to submit on behalf of those who are.
+Commits **MUST** be submitted only with a sign-off by the submitter. A commit without a sign-off will be automatically rejected. You don't need be the author or the copyright holder of the contribution, but you must make sure that you have the power to submit on behalf of those who are.
 
 To sign your work, just add a line like this at the end of your commit message:
 
@@ -115,3 +190,4 @@ By making a contribution to this project, I certify that:
     maintained indefinitely and may be redistributed consistent with
     this project or the open source license(s) involved.
 ```
+