[gedit] Update Catalan translation

[Jordi Mas <jmas src gnome org>]

commit 89b5fcf1f2aa5718f48d46c18494a0d9abd5a5f8
Author: Jordi Mas <jmas softcatala org>
Date:   Wed Mar 28 16:57:44 2018 +0200

    Update Catalan translation

 po/ca.po |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)
---
diff --git a/po/ca.po b/po/ca.po
index a499efe..2bfb215 100644
--- a/po/ca.po
+++ b/po/ca.po
@@ -1606,7 +1606,7 @@ msgstr "Unix/Linux"
 
 #: ../gedit/gedit-utils.c:1465
 msgid "Mac OS Classic"
-msgstr "Mac OS Clàssic"
+msgstr "Mac OS clàssic"
 
 #: ../gedit/gedit-utils.c:1467
 msgid "Windows"