[gnome-music] Add Catalan language

[Jordi Mas <jmas src gnome org>]

commit 472228175c931b14e50910712e540e3f5d0756d7
Author: Jordi Mas <jmas softcatala org>
Date:   Sat Feb 10 08:10:17 2018 +0100

    Add Catalan language

 help/Makefile.am | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
---
diff --git a/help/Makefile.am b/help/Makefile.am
index 4a21c2b..5e24545 100644
--- a/help/Makefile.am
+++ b/help/Makefile.am
@@ -19,4 +19,4 @@ HELP_FILES = \
 HELP_MEDIA = \
         figures/gnome-music-3.12.png
 
-HELP_LINGUAS = cs da de el es fr gl hu ko pl pt_BR ro sv
+HELP_LINGUAS = ca cs da de el es fr gl hu ko pl pt_BR ro sv