Address niccokunzmann's review feedback

- Restore missing 'Find out who contributed' section in credits.rst
- Move PR template instructions to HTML comment
- Simplify PR template: remove helper text, make tests optional
- Reduce duplication in .github/CONTRIBUTING.md by removing CI reminder
- All changes maintain functionality while improving maintainer experience

.github/CONTRIBUTING.md

@@ -1,7 +1,4 @@
 # Contributing
 
 See our [contributing guidelines](https://icalendar.readthedocs.io/en/latest/contributing.html) 
-for complete information on how to contribute to icalendar.
-
-**Quick reminder:** All pull requests must include a changelog entry in 
-`CHANGES.rst` or they will fail CI checks.
+for complete information on how to contribute to icalendar.

.github/pull_request_template.md

@@ -1,27 +1,17 @@
-## Important: Changelog Entry Required
+<!--
+Please add an entry to the CHANGES.rst file as described in https://icalendar.readthedocs.io/en/stable/contributing.html
+-->
 
-**All pull requests must include a changelog entry or they will fail CI checks.**
-
-Please add an entry to `CHANGES.rst` under the appropriate section:
-- **Minor changes:** For improvements, refactoring, documentation updates
-- **Breaking changes:** For changes that break existing API  
-- **New features:** For new functionality
-- **Bug fixes:** For bug fixes and error corrections
-
----
-
-## Pull Request Details
-
-**Fixes #** (issue number)
+**Fixes #**
 
 **Description:**
 <!-- Write a description of the fixes or improvements -->
 
 **Checklist:**
 - [ ] Added entry to `CHANGES.rst`
-- [ ] Added/updated tests
+- [ ] Added/updated tests (if applicable)
 - [ ] Added myself to `docs/credits.rst`
-- [ ] All tests pass locally
+- [ ] All tests pass
 
 **Additional Information:**
 <!-- Screenshots, links to documentation, etc. -->

docs/credits.rst

@@ -80,3 +80,7 @@ icalendar contributors
 - Victor Varvaryuk <victor.varvariuc@gmail.com>
 - Ville Skyttä <ville.skytta@iki.fi>
 - Wichert Akkerman <wichert@wiggy.net>
+
+Find out who contributed::
+
+    $ git shortlog -s -e