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_pl_pl.utf-8.vim b/runtime/lang/menu_pl_pl.utf-8.vim
index 01bd585..56d9ecb 100644
--- a/runtime/lang/menu_pl_pl.utf-8.vim
+++ b/runtime/lang/menu_pl_pl.utf-8.vim
@@ -40,7 +40,7 @@
 menutrans &Print			&Drukuj
 menutrans Sa&ve-Exit<Tab>:wqa		W&yjście\ z\ zapisem<Tab>:wqa
 menutrans E&xit<Tab>:qa			&Wyjście<Tab>:qa
-menutrans Open\ Tab\.\.\.<Tab>:tabnew	Otwórz\ &kartę\.\.\.<Tab>:tabnew
+menutrans Open\ &Tab\.\.\.<Tab>:tabnew	Otwórz\ &kartę\.\.\.<Tab>:tabnew
 
 " Edit menu
 menutrans &Edit				&Edycja