[shotwell] Fix in Catalan translation

[Jordi Mas <jmas src gnome org>]

commit 0ebdf12e12fc12899e72db4b59edf8d65d0e0e23
Author: Jordi Mas <jmas softcatala org>
Date:   Thu Sep 22 19:55:58 2016 +0200

    Fix in Catalan translation

 po/ca.po |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)
---
diff --git a/po/ca.po b/po/ca.po
index 3f08922..c807615 100644
--- a/po/ca.po
+++ b/po/ca.po
@@ -1569,7 +1569,7 @@ msgstr "_Qualitat:"
 
 #: ../src/Dialogs.vala:222
 msgid "_Scaling constraint:"
-msgstr "Constant d'e_scala:"
+msgstr "Restricció d'e_scala:"
 
 #: ../src/Dialogs.vala:225
 msgid "_Pixels:"