[gitg] Update screenshot dimensions

[Jesse van den Kieboom <jessevdk src gnome org>]

commit 6a4ddea50f798520e26e37eb75a23489a6db8c46
Author: Jesse van den Kieboom <jessevdk gmail com>
Date:   Sun Jan 5 22:57:26 2014 +0100

    Update screenshot dimensions

 data/gitg.appdata.xml |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)
---
diff --git a/data/gitg.appdata.xml b/data/gitg.appdata.xml
index 8e6bd72..032f032 100644
--- a/data/gitg.appdata.xml
+++ b/data/gitg.appdata.xml
@@ -17,7 +17,7 @@
     </ul>
   </description>
   <screenshots>
-    <screenshot type="default" width="1920" 
height="1053">https://wiki.gnome.org/Apps/Gitg?action=AttachFile&amp;do=get&amp;target=diff-view.png</screenshot>
+    <screenshot type="default" width="1200" 
height="675">https://wiki.gnome.org/Apps/Gitg?action=AttachFile&amp;do=get&amp;target=diff-view.png</screenshot>
   </screenshots>
   <url type="homepage">https://wiki.gnome.org/Gitg</url>
   <updatecontact>sindhus live in</updatecontact>