Update mirror link

Author: pluja

README.md

@@ -2,7 +2,7 @@
 <p align="center"><img width="500" src="misc/logo.png"> </img></p>
 <p align="center">
 	<img src="https://awesome.re/badge.svg" alt="Awesome">
-	<a href="https://git.nixnet.services/pluja/awesome-privacy"><img alt="Mirror" src="https://img.shields.io/badge/Mirror-gitea-green"></img></a>
+	<a href="https://codeberg.org/pluja/awesome-privacy"><img alt="Mirror" src="https://img.shields.io/badge/Mirror-Codeberg-blue"></img></a>
 </p>
 <p align="center">List of free, open source and privacy respecting services and alternatives to privative services.</p>
 <p align="center">