[polari] appdata: Use gnome-3-18 branch for screenshots

[Florian Müllner <fmuellner src gnome org>]

commit fa9b871df54c32ff4d5a4789e27fd32402e4a30a
Author: Florian Müllner <fmuellner gnome org>
Date:   Wed Oct 14 02:06:01 2015 +0200

    appdata: Use gnome-3-18 branch for screenshots

 data/appdata/org.gnome.Polari.appdata.xml.in |    6 +++---
 1 files changed, 3 insertions(+), 3 deletions(-)
---
diff --git a/data/appdata/org.gnome.Polari.appdata.xml.in b/data/appdata/org.gnome.Polari.appdata.xml.in
index 437a1f6..5b5f656 100644
--- a/data/appdata/org.gnome.Polari.appdata.xml.in
+++ b/data/appdata/org.gnome.Polari.appdata.xml.in
@@ -21,9 +21,9 @@
     </_p>
   </description>
   <screenshots>
-    <screenshot 
type="default">https://git.gnome.org/browse/polari/plain/data/appdata/polari-main.png</screenshot>
-    <screenshot>https://git.gnome.org/browse/polari/plain/data/appdata/polari-user-list.png</screenshot>
-    <screenshot>https://git.gnome.org/browse/polari/plain/data/appdata/polari-connections.png</screenshot>
+    <screenshot 
type="default">https://git.gnome.org/browse/polari/plain/data/appdata/polari-main.png?h=gnome-3-18</screenshot>
+    
<screenshot>https://git.gnome.org/browse/polari/plain/data/appdata/polari-user-list.png?h=gnome-3-18</screenshot>
+    
<screenshot>https://git.gnome.org/browse/polari/plain/data/appdata/polari-connections.png?h=gnome-3-18</screenshot>
   </screenshots>
   <url type="homepage">https://wiki.gnome.org/Apps/Polari</url>
   <updatecontact>fmuellner gnome org</updatecontact>