remote-mediawiki doc: correct link to GitHub project

Change the link to the canonical one, the old link redirects to the
new one.

Signed-off-by: Ævar Arnfjörð Bjarmason <avarab@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

contrib/mw-to-git/git-mw.perl

@@ -6,7 +6,7 @@
 # License: GPL v2 or later
 
 # Set of tools for git repo with a mediawiki remote.
-# Documentation & bugtracker: https://github.com/moy/Git-Mediawiki/
+# Documentation & bugtracker: https://github.com/Git-Mediawiki/Git-Mediawiki
 
 use strict;
 use warnings;

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

@@ -9,7 +9,7 @@
 # License: GPL v2 or later
 
 # Gateway between Git and MediaWiki.
-# Documentation & bugtracker: https://github.com/moy/Git-Mediawiki/
+# Documentation & bugtracker: https://github.com/Git-Mediawiki/Git-Mediawiki
 
 use strict;
 use MediaWiki::API;

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/moy/Git-Mediawiki/wiki
+https://github.com/Git-Mediawiki/Git-Mediawiki