l10n: TEAMS: Change repository URL of zh_CN

Repository URL of zh_CN l10n for Git has been changed over 2 years,
update po/TEAMS for it.

Signed-off-by: Jiang Xin <worldhello.net@gmail.com>

po/TEAMS

@@ -51,7 +51,7 @@ Leader:		Trần Ngọc Quân <vnwildman AT gmail.com>
 Members:	Nguyễn Thái Ngọc Duy <pclouds AT gmail.com>
 
 Language:	zh_CN (Simplified Chinese)
-Repository:	https://github.com/gotgit/git-po-zh_CN/
+Repository:	https://github.com/jiangxin/git/
 Leader:		Jiang Xin <worldhello.net@gmail.com>
 Members:	Riku <lu.riku AT gmail.com>
 		Zhuang Ya <zhuangya AT me.com>