missing "var" in line 201 menu.md

in line 201 at menu.md, 
should be ```var menu = Menu.buildFromTemplate(template);```

docs/api/menu.md

@@ -198,7 +198,7 @@ if (process.platform == 'darwin') {
   );
 }
 
-menu = Menu.buildFromTemplate(template);
+var menu = Menu.buildFromTemplate(template);
 Menu.setApplicationMenu(menu);
 ```