docs: disclaimers added for doorlock, gateway, vend_machine

Signed-off-by: Sebastian Serewa <sebastian.serewa@huawei.com>

docs/blueprints/doorlock.rst

@@ -9,7 +9,11 @@ DoorLock Blueprint
 ##################
 
 .. contents::
+   :depth: 4
 
+.. attention::
+   The `Door Lock` blueprint is still a work in progress (WIP). For more
+   information, see the :ref:`resources <ResourcesDL>` section.
 
 ********
 Overview
@@ -141,3 +145,10 @@ Get sources
 .. code-block:: bash
 
  user@pc:~/ohos$ repo sync -d
+
+Resources
+=========
+
+.. _ResourcesDL:
+
+- See `Door lock's requirement <https://git.ostc-eu.org/OSTC/requirements/-/issues/12>`_

docs/blueprints/transparent-gateway.rst

@@ -10,6 +10,10 @@ Transparent Gateway Blueprint
 .. contents::
    :depth: 4
 
+.. attention::
+   The `Transparent Gateway` blueprint is a still work in progress (WIP). For
+   more information, see the :ref:`resources <ResourcesTG>` section.
+
 Overview
 ********
 
@@ -71,3 +75,10 @@ Get sources
    .. code-block:: bash
 
       user@pc:~/ohos$ DISTRO="allscenarios-linux-blueprint-gateway" MACHINE=raspberrypi4-64 bitbake blueprint-gateway-image
+
+Resources
+*********
+
+.. _ResourcesTG:
+
+- See `Transparent gateway's requirement <https://git.ostc-eu.org/OSTC/requirements/-/issues/13>`_

docs/blueprints/vending-machine.rst

@@ -10,6 +10,10 @@ Vending Machine Blueprint
 .. contents::
    :depth: 4
 
+.. attention::
+   The `Vending Machine` blueprint is a still work in progress (WIP). For
+   more information, see the :ref:`resources <ResourcesVM>` section.
+
 Overview
 ********
 
@@ -36,3 +40,10 @@ Architecture and Interfaces
    :maxdepth: 3
 
    vending-machine-dev.rst
+
+Resources
+*********
+
+.. _ResourcesVM:
+
+- See `Vending machine's requirement <https://git.ostc-eu.org/OSTC/requirements/-/issues/80>`_