Update CHANGELOG.md (#9702)

Co-authored-by: github-actions[bot] <github-actions[bot]@users.noreply.github.com>

Author: community-scripts-pr-app[bot]

CHANGELOG.md

@@ -32,6 +32,10 @@ Exercise vigilance regarding copycat or coat-tailing sites that seek to exploit
 
     - Refactor: OneDev [@MickLesk](https://github.com/MickLesk) ([#9597](https://github.com/community-scripts/ProxmoxVE/pull/9597))
 
+### 📂 Github
+
+  - chore(github): improve PR template and cleanup obsolete references | move contribution guide [@MickLesk](https://github.com/MickLesk) ([#9700](https://github.com/community-scripts/ProxmoxVE/pull/9700))
+
 ## 2025-12-04
 
 ### 🛠️ Core Overhaul