[gnome-builder] appdata: specify help url in appdata

[Christian Hergert <chergert src gnome org>]

commit ab73cecc086f654b903844878d0f1ccc831bce58
Author: Christian Hergert <chergert redhat com>
Date:   Wed Oct 18 03:15:55 2017 -0700

    appdata: specify help url in appdata

 data/org.gnome.Builder.appdata.xml.in |    1 +
 1 files changed, 1 insertions(+), 0 deletions(-)
---
diff --git a/data/org.gnome.Builder.appdata.xml.in b/data/org.gnome.Builder.appdata.xml.in
index dd78ab4..6120ef9 100644
--- a/data/org.gnome.Builder.appdata.xml.in
+++ b/data/org.gnome.Builder.appdata.xml.in
@@ -66,6 +66,7 @@
   <url type="homepage">https://wiki.gnome.org/Apps/Builder</url>
   <url type="bugtracker">https://bugzilla.gnome.org/enter_bug.cgi?product=gnome-builder</url>
   <url type="donation">http://www.gnome.org/friends/</url>
+  <url type="help">https://builder.readthedocs.io</url>
   <project_group>GNOME</project_group>
 
   <kudos>