Update _navbar.md

docs/_navbar.md

 * [介绍](README.md)
 * [框架](collocation/pages.md)
 * [组件](component/README.md)
-* [API](api/README.md)
-* [uniCloud](uniCloud/README.md)
+* [API](api/README.md)
+<!-- * [uniCloud](uniCloud/README.md) -->
 * [其它规范](javascript:;)
   - [App扩展规范HTML5 Plus](http://www.html5plus.org/doc/h5p.html)
   - [微信小程序](https://developers.weixin.qq.com/miniprogram/dev/framework/)
@@ -22,4 +22,4 @@
 	<a href="//github.com/dcloudio/uni-app" target="_blank">
 		<img src="//img-cdn-qiniu.dcloud.net.cn/uniapp/doc/github.svg">
 	</a>
-</div>
\ No newline at end of file
+</div>