[calls] metainfo: Add URL tag for translations

[Evangelos Ribeiro Tzaras <devrtz src gnome org>]

commit f828f2459160fd82bc34fc87c7b03ac58d729f50
Author: Evangelos Ribeiro Tzaras <devrtz fortysixandtwo eu>
Date:   Tue Oct 19 19:46:20 2021 +0200

    metainfo: Add URL tag for translations
    
    See
    https://www.freedesktop.org/software/appstream/docs/chap-Metadata.html#tag-url

 data/org.gnome.Calls.metainfo.xml | 1 +
 1 file changed, 1 insertion(+)
---
diff --git a/data/org.gnome.Calls.metainfo.xml b/data/org.gnome.Calls.metainfo.xml
index 9a603f88..cd414701 100644
--- a/data/org.gnome.Calls.metainfo.xml
+++ b/data/org.gnome.Calls.metainfo.xml
@@ -14,6 +14,7 @@
 
     <url type="homepage">https://gitlab.gnome.org/GNOME/calls</url>
     <url type="bugtracker">https://gitlab.gnome.org/GNOME/calls/issues</url>
+    <url type="translate">https://l10n.gnome.org/module/calls/</url>
     
     <project_group>GNOME</project_group>
     <launchable type="desktop-id">org.gnome.Calls.desktop</launchable>