Update Scope field description for Project Proposals
Update the help text for the **Scope** field to provide clearer guidance on the expected content and structure of a project scope.
### Proposed Description
> **Scope**\
> Describe the project in simple terms that anyone could understand in one sentence, then summarise what the project provides, the standards or technologies it supports, the main deliverables included in the project, and any important exclusions or non-goals.
**Original issue:**
https://gitlab.eclipse.org/eclipsefdn/software-dev/websites/projects.eclipse.org/-/work_items/456#note_7236634
/cc @carmendelgado @wbeaton
issue