fix extra closing parenthesis (electron#16528)

MAKIO135 · John Kleinschmidt · commit fb8bde009454 · 2019-01-25T09:43:38.000-05:00
diff --git a/docs/api/menu.md b/docs/api/menu.md
@@ -253,7 +253,7 @@ const { remote } = require('electron')
 const { Menu, MenuItem } = remote
 
 const menu = new Menu()
-menu.append(new MenuItem({ label: 'MenuItem1', click() { console.log('item 1 clicked') } })))
+menu.append(new MenuItem({ label: 'MenuItem1', click() { console.log('item 1 clicked') } }))
 menu.append(new MenuItem({ type: 'separator' }))
 menu.append(new MenuItem({ label: 'MenuItem2', type: 'checkbox', checked: true }))
 
