## Linked issue
Closes#4945
## Summary / motivation
Two small clarifications to the contributing guide:
- Added a **Pull Request Description** section pointing contributors to
the
PR template (`.github/pull_request_template.md`), so they know upfront
what fields are required before opening a PR.
- Strengthened the test coverage requirement from "please consider" to a
clear rule, with explicit exceptions (version bumps, docs, translations,
dependency updates, chore).