Chore: Update README.md

README.md

@@ -28,4 +28,4 @@ For Chrome users:
 - Choose the unzipped folder.
 - The extension should now show up.
 
-You may test the webextension on any website or use this simple testpage: https://github.com/tommycos/test-webpage (requires installing http-server with npm to host)
+You may test the webextension on any website or use this simple testpage: https://git.imp.fu-berlin.de/tomcos2014/test-webpage (requires installing http-server with npm to host)