[gnome-packagekit] Add a missing tag to the AppData file

[Richard Hughes <rhughes src gnome org>]

commit a8a156243eb7f637eb4648b87f1f298df5ddf166
Author: Richard Hughes <richard hughsie com>
Date:   Mon Jan 25 15:31:21 2016 +0000

    Add a missing tag to the AppData file

 data/appdata/gpk-application.appdata.xml.in |    1 +
 1 files changed, 1 insertions(+), 0 deletions(-)
---
diff --git a/data/appdata/gpk-application.appdata.xml.in b/data/appdata/gpk-application.appdata.xml.in
index 4c391e3..534f498 100644
--- a/data/appdata/gpk-application.appdata.xml.in
+++ b/data/appdata/gpk-application.appdata.xml.in
@@ -81,4 +81,5 @@
   <url type="homepage">http://www.packagekit.org/</url>
   <updatecontact>richard_at_hughsie.com</updatecontact>
   <project_group>GNOME</project_group>
+  <translation type="gettext">gnome-packagekit</translation>
 </application>