[gnome-sdk-images] g-t-s has moved to GitLab and got renamed to gnome-themes-extra

[Juraj Fiala <jurf src gnome org>]

commit bd544a69f56e2525c48eb560fa42baefd5ecf816
Author: Juraj Fiala <jurf riseup net>
Date:   Wed Jan 24 19:45:47 2018 +0100

    g-t-s has moved to GitLab and got renamed to gnome-themes-extra

 org.gnome.Sdk.json.in |    4 ++--
 1 files changed, 2 insertions(+), 2 deletions(-)
---
diff --git a/org.gnome.Sdk.json.in b/org.gnome.Sdk.json.in
index c81d9cd..3503dce 100644
--- a/org.gnome.Sdk.json.in
+++ b/org.gnome.Sdk.json.in
@@ -619,11 +619,11 @@
             ]
         },
         {
-            "name": "gnome-themes-standard",
+            "name": "gnome-themes-extra",
             "sources": [
                 {
                     "type": "git",
-                    "url": "https://git.gnome.org/browse/gnome-themes-standard";
+                    "url": "https://gitlab.gnome.org/GNOME/gnome-themes-extra.git";
                 }
             ]
         },