[polari] Update bug tracker to gitlab in doap file

[Gitlab System User <gitlab src gnome org>]

commit 8b061ed92126da3d4ce82645b92c8ef130a43f17
Author: Rafael Fontenelle <rafaelff gnome org>
Date:   Tue Oct 17 18:44:00 2017 +0000

    Update bug tracker to gitlab in doap file

 polari.doap | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
---
diff --git a/polari.doap b/polari.doap
index 006afcb..31973b4 100644
--- a/polari.doap
+++ b/polari.doap
@@ -9,7 +9,7 @@
   <description>Polari is a simple IRC Client that is designed to integrate seamlessly with GNOME 
3</description>
   <homepage rdf:resource="https://wiki.gnome.org/Apps/Polari"; />
   <download-page rdf:resource="http://download.gnome.org/sources/polari/"; />
-  <bug-database rdf:resource="https://bugzilla.gnome.org/browse.cgi?product=polari"; />
+  <bug-database rdf:resource="https://gitlab.gnome.org/GNOME/polari/issues"; />
 
   <category rdf:resource="http://api.gnome.org/doap-extensions#apps"; />
   <programming-language>JavaScript</programming-language>