[gnome-calendar] doap: Update database link

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

commit b45f7b2392dfc11322239a6150eccf571c2cbefa
Author: Georges Basile Stavracas Neto <georges stavracas gmail com>
Date:   Sun Jan 28 00:32:07 2018 -0200

    doap: Update database link

 gnome-calendar.doap | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
---
diff --git a/gnome-calendar.doap b/gnome-calendar.doap
index fb85de60..6371263b 100644
--- a/gnome-calendar.doap
+++ b/gnome-calendar.doap
@@ -9,7 +9,7 @@
   <description>GNOME Calendar is a simple and beautiful calendar application designed to perfectly fit the 
GNOME desktop. By reusing the components which the GNOME desktop is build on, Calendar nicely integrates with 
the GNOME ecosystem.</description>
   <homepage rdf:resource="https://wiki.gnome.org/Apps/Calendar"; />
   <download-page rdf:resource="http://download.gnome.org/sources/gnome-calendar/"; />
-  <bug-database rdf:resource="https://bugzilla.gnome.org/browse.cgi?product=gnome-calendar"; />
+  <bug-database rdf:resource="https://gitlab.gnome.org/GNOME/gnome-calendar/issues"; />
   <category rdf:resource="http://api.gnome.org/doap-extensions#apps"; />
   <programming-language>C</programming-language>