[folks] README: point git URL to GitLab

[Niels De Graef <nielsdg src gnome org>]

commit 0bf34496c1c7e8620d071286b86dd40f682dd741
Author: Niels De Graef <Niels DeGraef barco com>
Date:   Sat Jun 16 11:17:25 2018 +0200

    README: point git URL to GitLab

 README | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
---
diff --git a/README b/README
index 944b7d9b..4778cbf8 100644
--- a/README
+++ b/README
@@ -6,7 +6,7 @@ This source distribution also builds a Telepathy backend
 libfolks classes (libfolks-telepathy.so).
 
 Browse the official repository for folks here:
-  https://git.gnome.org/browse/folks
+  https://gitlab.gnome.org/GNOME/folks
 
 More information is available at:
   https://wiki.gnome.org/Projects/Folks