[shotwell] Update Catalan translation

[Jordi Mas <jmas src gnome org>]

commit 5553bf0d37de1ca0b1300fc22d4a0280ca3e3efd
Author: Jordi Mas <jmas softcatala org>
Date:   Sat Mar 3 09:51:50 2018 +0100

    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 2844180..43f269e 100644
--- a/po/ca.po
+++ b/po/ca.po
@@ -152,7 +152,7 @@ msgstr "blog per defecte"
 
 #: misc/org.yorba.shotwell-extras.gschema.xml:33
 msgid "The name of the default blog of the user, if any"
-msgstr "El nom del bloc per defecte de l'usuari, si és el cas"
+msgstr "El nom del blog per defecte de l'usuari, si és el cas"
 
 #: misc/org.yorba.shotwell-extras.gschema.xml:40
 msgid "Rajce URL"