refactor: 增加权限管理示例链接

src/menu/modules/demo-d2-crud-plus.js

@@ -17,6 +17,11 @@ export default {
       title: '综合示例',
       path: `${pre}synthesize`
     },
+    {
+      title: '权限管理',
+      icon: 'link',
+      path: 'http://qiniu.veryreader.com/D2CrudPlusExample/#/permission/resource'
+    },
     {
       title: '更多示例',
       icon: 'link',