[four-in-a-row] Fix broken markup in Catalan help translation

[Andre Klapper <aklapper src gnome org>]

commit 66ada38df2e8d10591ff47ea6ba099423c521181
Author: Andre Klapper <a9016009 gmx de>
Date:   Fri Dec 25 23:17:17 2020 +0100

    Fix broken markup in Catalan help 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 d8ef087..404b382 100644
--- a/help/ca/ca.po
+++ b/help/ca/ca.po
@@ -337,7 +337,7 @@ msgstr ""
 " marbre a la columna. Per utilitzar un consell, premeu el botó de la barra de"
 " capçalera que mostra una fletxa i el color per a jugar o bé useu el botó <gui "
 "style=\"button\">Finalitza</gui> i seleccioneu <gui "
-"style=\"menuitem\">Pista<key>Ctrl</key>H</key></keyseq>."
+"style=\"menuitem\">Pista<key>Ctrl</key><key>H</key></keyseq>."
 
 #. (itstool) path: note/p
 #: C/make-easy.page:56