Clarifying the Licence/CLA template for PR

Author: lfnothias

.github/pull_request_template.md

@@ -1,11 +1,10 @@
 ## Contribution checklist
 
-- [ ] I have read `CONTRIBUTING.md`.
-- [ ] I confirm I have the legal right to submit this contribution.
-- [ ] I have signed the required CLA, or I will complete the CLA process if requested.
-- [ ] If this is my first contribution, I understand I may be asked to sign the CLA in the PR thread/checks.
-- [ ] I am not knowingly submitting code that is incompatible with this repository's licensing model.
-
-## Licensing reminder
+Please confirm the following before requesting review:
 
-This repository is publicly distributed under AGPLv3. Non-trivial external contributions require CLA completion before merge (individual or corporate/employer route, as applicable). For CLA questions, contact dr20.spv@listes.cnrs.fr.
+- [ ] I have read [`CONTRIBUTING.md`](/CONTRIBUTING.md), [`docs/licensing-notes.md`](/docs/licensing-notes.md), and the repository license information ([`LICENSE`](/LICENSE)) for this repository (GNU AGPLv3).
+- [ ] I have read [`docs/cla-process.md`](/docs/cla-process.md) and understand the CLA workflow for contributions.
+- [ ] I confirm that I have the legal right to submit this contribution.
+- [ ] I have signed the required CLA, or I will complete the CLA process if requested.
+- [ ] If this is my first contribution, I understand that I may be asked to sign the CLA through the PR thread or status checks.
+- [ ] I am not knowingly submitting code that is incompatible with this repository’s licensing model.