[lightsoff] Update Catalan translation

[Jordi Mas <jmas src gnome org>]

commit 6dc296b777bff07357d5a0e17babb25b90c7f8cc
Author: Jordi Mas <jmas softcatala org>
Date:   Fri Dec 13 07:45:43 2019 +0100

    Update Catalan translation

 help/ca/ca.po | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
---
diff --git a/help/ca/ca.po b/help/ca/ca.po
index 26fe65e..82aff41 100644
--- a/help/ca/ca.po
+++ b/help/ca/ca.po
@@ -158,7 +158,7 @@ msgstr ""
 
 #: C/basic.page:29(section/title)
 msgid "Using the mouse"
-msgstr "Ratolí sense fil"
+msgstr "Utilització del ratolí"
 
 #: C/basic.page:31(item/p)
 msgid "To select a tile move the mouse pointer over the tile and click it."