[gnome-boxes] Update Catalan translation

[Jordi Mas <jmas src gnome org>]

commit 98116b514c9c85de4943f6a096f97ed7c06a1c05
Author: Jordi Mas <jmas softcatala org>
Date:   Sat Jul 22 15:35:49 2017 +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 1becc78..1708eeb 100644
--- a/po/ca.po
+++ b/po/ca.po
@@ -205,7 +205,7 @@ msgstr "Les màquines poden ser virtuals o remotes."
 
 #: ../data/ui/empty-boxes.ui.h:3
 msgid "Just hit the <b>New</b> button to create your first one."
-msgstr "Només cal que premeu el botó <b>Nou</b> per crear-ne la primera."
+msgstr "Només cal que premeu el botó <b>Nova</b> per crear-ne la primera."
 
 #: ../data/ui/kbd-shortcuts-window.ui.h:1
 msgctxt "shortcut window"