[gb-rdp] gitmodules: fix libgsystem url

[Marc-Andre Lureau <malureau src gnome org>]

commit bac1f1282a72eda5afa77c3a37b0a4aab81c2362
Author: Marc-André Lureau <marcandre lureau gmail com>
Date:   Mon Feb 23 11:23:04 2015 +0100

    gitmodules: fix libgsystem url

 .gitmodules |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)
---
diff --git a/.gitmodules b/.gitmodules
index c0c4303..ab081b5 100644
--- a/.gitmodules
+++ b/.gitmodules
@@ -1,3 +1,3 @@
 [submodule "src/libgsystem"]
        path = src/libgsystem
-       url = gnome:libgsystem
+       url = https://git.gnome.org/browse/libgsystem