[rhythmbox] appdata: update bugtracker url to point at gitlab

[Jonathan Matthew <jmatthew src gnome org>]

commit 3b21635092e9b34e6634894ac802b9b4fea9f13c
Author: Jonathan Matthew <jonathan d14n org>
Date:   Sun Sep 15 09:16:19 2019 +1000

    appdata: update bugtracker url to point at gitlab

 data/rhythmbox.appdata.xml.in | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
---
diff --git a/data/rhythmbox.appdata.xml.in b/data/rhythmbox.appdata.xml.in
index 0d0c1b7c2..478eb565c 100644
--- a/data/rhythmbox.appdata.xml.in
+++ b/data/rhythmbox.appdata.xml.in
@@ -20,7 +20,7 @@
     </_p>
   </description>
   <url type="homepage">https://wiki.gnome.org/Apps/Rhythmbox</url>
-  <url type="bugtracker">https://bugzilla.gnome.org/enter_bug.cgi?product=rhythmbox</url>
+  <url type="bugtracker">https://gitlab.gnome.org/GNOME/rhythmbox/issues</url>
   <url type="donation">http://www.gnome.org/friends/</url>
   <url type="help">https://help.gnome.org/users/rhythmbox/stable/</url>
   <screenshots>