[gitg] Link appdata screenshot to wiki

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

commit ed5bbdc83608d0b1ea761a4831e77d9d9c463e50
Author: Jesse van den Kieboom <jessevdk gmail com>
Date:   Sun Jan 5 21:24:23 2014 +0100

    Link appdata screenshot to wiki

 data/appdata/hi-res-category.png |  Bin 132558 -> 0 bytes
 data/gitg.appdata.xml            |    2 +-
 2 files changed, 1 insertions(+), 1 deletions(-)
---
diff --git a/data/gitg.appdata.xml b/data/gitg.appdata.xml
index e467175..8e6bd72 100644
--- a/data/gitg.appdata.xml
+++ b/data/gitg.appdata.xml
@@ -17,7 +17,7 @@
     </ul>
   </description>
   <screenshots>
-    <screenshot type="default" width="1024" 
height="768">https://git.gnome.org/browse/gitg/plain/data/appdata/hi-res-category.png</screenshot>
+    <screenshot type="default" width="1920" 
height="1053">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>