Documentation: update the location of the git-gui repo

Signed-off-by: Pratyush Yadav <[email protected]>
Signed-off-by: Junio C Hamano <[email protected]>

Author: prati0100

Documentation/git-gui.txt

@@ -112,15 +112,9 @@ Other
 versions are distributed as part of the Git suite for the convenience
 of end users.
 
-A 'git gui' development repository can be obtained from:
+The official repository of the 'git gui' project can be found at:
 
-  git clone git://repo.or.cz/git-gui.git
-
-or
-
-  git clone http://repo.or.cz/r/git-gui.git
-
-or browsed online at http://repo.or.cz/w/git-gui.git/[].
+  https://github.com/prati0100/git-gui.git/
 
 GIT
 ---