Git: Fix closing namespace comment.

Change-Id: I886bbbf886439d3d2b484afb2af2131e7c696e65
Reviewed-by: Tobias Hunger <tobias.hunger@digia.com>

src/plugins/git/gitsubmiteditorwidget.h

@@ -81,6 +81,6 @@ private:
 };
 
 } // namespace Internal
-} // namespace Perforce
+} // namespace Git
 
 #endif // GITSUBMITEDITORWIDGET_H