Localize the "special" input menu item

src/byob.js

@@ -3702,7 +3702,7 @@ InputSlotDialogMorph.prototype.addSlotsMenu = function () {
             menu.addMenu(
                 (contains(['%mlt', '%code'], myself.fragment.type) ?
                     on : off) +
-                'special',
+                localize('special'),
                  myself.specialSlotsMenu()
             );
             return menu;