Fix menu localization not updated for "Open Tab..." item (#12993)

THe menu item "Open Tab..." was changed to "Open &Tab..." in #12895 but
localization files were not updated. Update it here.

Signed-off-by: Christian Brabandt <cb@256bit.org>
diff --git a/runtime/lang/menu_da.utf-8.vim b/runtime/lang/menu_da.utf-8.vim
index cffe1cc..61689fd 100644
--- a/runtime/lang/menu_da.utf-8.vim
+++ b/runtime/lang/menu_da.utf-8.vim
@@ -36,7 +36,7 @@
 
 menut &Open\.\.\.<Tab>:e	Åbn\.\.\.<Tab>:e
 menut Sp&lit-Open\.\.\.<Tab>:sp	Opdel-åbn\.\.\.<Tab>:sp
-menut Open\ Tab\.\.\.<Tab>:tabnew	Åbn\ faneblad\.\.\.<Tab>:tabnew
+menut Open\ &Tab\.\.\.<Tab>:tabnew	Åbn\ faneblad\.\.\.<Tab>:tabnew
 menut &New<Tab>:enew	Ny<Tab>:enew
 menut &Close<Tab>:close	Luk<Tab>:close
 " -SEP1-