Update README with new repository location

Updated README to reflect repository migration to Codeberg.

Author: pSub

README.md

@@ -1,9 +1,12 @@
+> [!IMPORTANT]
+> This repository has been moved from GitHub to Codeberg (https://codeberg.org/pSub/pascal-wittmann.de). 
+> The GitHub repository is archieved will no longer receive updates. Please update your bookmarks and clones accordingly.
+
 Personal website with Yesod
 ---------------------------
 [![Haskell Programming Language](https://img.shields.io/badge/language-Haskell-blue.svg)](http://www.haskell.org)
 ![Build Status](https://github.com/pSub/pascal-wittmann.de/actions/workflows/build.yml/badge.svg)
 
-
 I've rewritten my website with the Yesod framework
 and had much fun with it. Since this is my first
 project in Haskell longer than 100 lines of code,