[gnome-nibbles] Update Catalan translation

[Jordi Mas <jmas src gnome org>]

commit 60ece3a822a1abe646685a7363322db5d2d4bbde
Author: Jordi Mas <jmas softcatala org>
Date:   Tue Oct 20 20:58:40 2020 +0200

    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 981248f..8ac55f5 100644
--- a/po/ca.po
+++ b/po/ca.po
@@ -697,7 +697,7 @@ msgstr "cian"
 #. Translators: possible color of a worm, as displayed in the Preferences dialog combobox
 #: src/nibbles-view.vala:914
 msgid "purple"
-msgstr "violeta"
+msgstr "porpra"
 
 #. Translators: message displayed in a MessageDialog, when the player tries to start a game while one is 
running
 #: src/nibbles-window.vala:404