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_cs_cz.iso_8859-2.vim b/runtime/lang/menu_cs_cz.iso_8859-2.vim
index c93b84b..4bbb771 100644
--- a/runtime/lang/menu_cs_cz.iso_8859-2.vim
+++ b/runtime/lang/menu_cs_cz.iso_8859-2.vim
@@ -19,7 +19,7 @@
 menutrans &File				&Soubor
 menutrans &Open\.\.\.<Tab>:e		&Otevøít\.\.\.<Tab>:e
 menutrans Sp&lit-Open\.\.\.<Tab>:sp	Otevøít\ v\ no&vém\ oknì\.\.\.<Tab>:sp
-menutrans Open\ Tab\.\.\.<Tab>:tabnew	Otevøít\ tab\.\.\.<Tab>:tabnew
+menutrans Open\ &Tab\.\.\.<Tab>:tabnew	Otevøít\ tab\.\.\.<Tab>:tabnew
 menutrans &New<Tab>:enew		&Nový<Tab>:enew
 menutrans &Close<Tab>:close		&Zavøít<Tab>:close
 menutrans &Save<Tab>:w			&Ulo¾it<Tab>:w