git-remote-mediawiki: new wiki URL in documentation

The Bibzball wiki is not maintained anymore.

Signed-off-by: Matthieu Moy <[email protected]>
Signed-off-by: Junio C Hamano <[email protected]>

Author: moy

contrib/mw-to-git/git-remote-mediawiki.txt

@@ -4,4 +4,4 @@ objects from mediawiki just as one would do with a classic git
 repository thanks to remote-helpers.
 
 For more information, visit the wiki at
-https://github.com/Bibzball/Git-Mediawiki/wiki
+https://github.com/moy/Git-Mediawiki/wiki