[gnome-control-center] appdata: Add UserDocs & HighContrast kudos

[Georges Basile Stavracas Neto <gbsneto src gnome org>]

commit 5ac87d3f1833c58b46d24fc42e8501c84e6dc9a4
Author: Jeremy Bicha <jbicha ubuntu com>
Date:   Mon Mar 19 14:34:47 2018 -0400

    appdata: Add UserDocs & HighContrast kudos
    
    https://github.com/GNOME/gnome-software/blob/master/doc/kudos.md
    
    Closes https://gitlab.gnome.org/GNOME/gnome-control-center/merge_requests/14

 shell/appdata/gnome-control-center.appdata.xml.in | 2 ++
 1 file changed, 2 insertions(+)
---
diff --git a/shell/appdata/gnome-control-center.appdata.xml.in 
b/shell/appdata/gnome-control-center.appdata.xml.in
index f417f8008..7d5aab8ab 100644
--- a/shell/appdata/gnome-control-center.appdata.xml.in
+++ b/shell/appdata/gnome-control-center.appdata.xml.in
@@ -19,8 +19,10 @@
   <kudos>
     <kudo>AppMenu</kudo>
     <kudo>HiDpiIcon</kudo>
+    <kudo>HighContrast</kudo>
     <kudo>ModernToolkit</kudo>
     <kudo>SearchProvider</kudo>
+    <kudo>UserDocs</kudo>
   </kudos>
   <translation type="gettext">gnome-control-center-2.0</translation>
 </component>