[gnome-calendar] Update Catalan translation

[Jordi Mas <jmas src gnome org>]

commit 91698ed73f32544cce48b81405dd14ce87da5de4
Author: Jordi Mas <jmas softcatala org>
Date:   Sat Mar 7 13:45:39 2020 +0100

    Update Catalan translation

 po/ca.po | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)
---
diff --git a/po/ca.po b/po/ca.po
index cdc478d9..93c84b6c 100644
--- a/po/ca.po
+++ b/po/ca.po
@@ -403,11 +403,11 @@ msgstr "Copyright © 2012–%d els autors del Calendari"
 
 #: src/gui/gcal-application.c:288
 msgid "translator-credits"
-msgstr "Jordi Mas i Hernàndez <jmas softcatala org>, 2013-2019"
+msgstr "Jordi Mas i Hernàndez <jmas softcatala org>, 2013-2020"
 
 #: src/gui/gcal-calendar-popover.ui:43
 msgid "_Synchronize Calendars"
-msgstr "_Sincronitza calendaris"
+msgstr "_Sincronitza els calendaris"
 
 #: src/gui/gcal-calendar-popover.ui:51
 msgid "Manage Calendars…"