[gnome-calculator] Update Catalan translation

[Jordi Mas <jmas src gnome org>]

commit c01ffd76d6f4d54e12e38d155d884c57d87f4a24
Author: Jordi Mas <jmas softcatala org>
Date:   Tue Mar 26 07:16:24 2019 +0100

    Update Catalan translation

 po/ca.po | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
---
diff --git a/po/ca.po b/po/ca.po
index 37738195..024d35ff 100644
--- a/po/ca.po
+++ b/po/ca.po
@@ -2726,7 +2726,7 @@ msgstr "_Zeros finals"
 #. Preferences dialog: label for show show thousands separator switch
 #: src/math-preferences.vala:117
 msgid "_Thousands separators"
-msgstr "_Separadors de _milers"
+msgstr "_Separadors de milers"
 
 #. Preferences dialog: Label for angle unit combo box
 #: src/math-preferences.vala:131