[glade] Update Catalan translation

[Jordi Mas <jmas src gnome org>]

commit ac548b066a42e80eff84b43bd33bc2d04c54ad36
Author: Jordi Mas <jmas softcatala org>
Date:   Wed Aug 11 15:23:22 2021 +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 06bff8c0..62a18193 100644
--- a/po/ca.po
+++ b/po/ca.po
@@ -8244,7 +8244,7 @@ msgstr "Atributs de la finestra"
 
 #: plugins/gtk+/glade-window-editor.ui:99
 msgid "Transient For:"
-msgstr "Transitiu per:"
+msgstr "Transitiu per a:"
 
 #: plugins/gtk+/glade-window-editor.ui:114
 msgid "Attached To:"