[gdm] Add description to DOAP file to make git hooks happy

[Andre Klapper <aklapper src gnome org>]

commit 6a7c8e95d7391b9164cc192c879db500665f0893
Author: Andre Klapper <a9016009 gmx de>
Date:   Wed Dec 12 15:49:53 2018 +0100

    Add description to DOAP file to make git hooks happy

 gdm.doap | 2 ++
 1 file changed, 2 insertions(+)
---
diff --git a/gdm.doap b/gdm.doap
index 9252c469..a92ec2ff 100644
--- a/gdm.doap
+++ b/gdm.doap
@@ -12,6 +12,8 @@
   <bug-database rdf:resource="https://gitlab.gnome.org/GNOME/gdm/issues/"; />
   <category rdf:resource="http://api.gnome.org/doap-extensions#core"; />
   <programming-language>C</programming-language>
+  <description>The GNOME Display Manager is a system service responsible for
+providing graphical log-ins and managing local and remote displays.</description>
 
   <maintainer>
     <foaf:Person>