[gdk-pixbuf] Add description field to the DOAP file

[Emmanuele Bassi <ebassi src gnome org>]

commit 16dbaba456d5dbf2201fead602c8b45d40011f37
Author: Emmanuele Bassi <ebassi gnome org>
Date:   Mon Apr 30 18:16:09 2018 +0100

    Add description field to the DOAP file
    
    Otherwise the commit hook on git.gnome.org will complain.

 gdk-pixbuf.doap |    1 +
 1 files changed, 1 insertions(+), 0 deletions(-)
---
diff --git a/gdk-pixbuf.doap b/gdk-pixbuf.doap
index ed17e2e..b62e0a6 100644
--- a/gdk-pixbuf.doap
+++ b/gdk-pixbuf.doap
@@ -6,6 +6,7 @@
          xmlns="http://usefulinc.com/ns/doap#";>
   <name xml:lang="en">gdk-pixbuf</name>
   <shortdesc xml:lang="en">An image loading library</shortdesc>
+  <description>GdkPixbuf is a library for loading, saving, and transforming image data in various formats, 
like PNG, JPEG, and TIFF</description>
 
   <homepage rdf:resource="http://www.gtk.org"; />
   <mailing-list rdf:resource="https://mail.gnome.org/mailman/listinfo/gtk-devel-list"; />