[gnome-system-monitor] Update Catalan translation

[Jordi Mas <jmas src gnome org>]

commit 0171c5755ce7a6923fcaf815c29b53d161cb1d64
Author: Jordi Mas <jmas softcatala org>
Date:   Sat Sep 14 23:53:30 2019 +0200

    Update Catalan translation

 po/ca.po | 8 ++++----
 1 file changed, 4 insertions(+), 4 deletions(-)
---
diff --git a/po/ca.po b/po/ca.po
index b83edf89..2990d2c1 100644
--- a/po/ca.po
+++ b/po/ca.po
@@ -457,19 +457,19 @@ msgstr "?"
 
 #: src/legacy/e_date.c:163
 msgid "Today %l∶%M %p"
-msgstr "Avui %l:%M %p"
+msgstr "Avui a les %-H:%M"
 
 #: src/legacy/e_date.c:172
 msgid "Yesterday %l∶%M %p"
-msgstr "Ahir: %l:%M %p"
+msgstr "Ahir a les %-H:%M"
 
 #: src/legacy/e_date.c:184
 msgid "%a %l∶%M %p"
-msgstr "%a %l:%M %p"
+msgstr "%a a les %-H:%M"
 
 #: src/legacy/e_date.c:192
 msgid "%b %d %l∶%M %p"
-msgstr "%-d %b %l:%M %p"
+msgstr "%-d %b a les %-H:%M"
 
 #: src/legacy/e_date.c:194
 msgid "%b %d %Y"