update readme

@@ -3,7 +3,7 @@ Simple-RTMP-Server
 
 SRS(SIMPLE RTMP Server) over state-threads created in 2013.<br/>
 SRS is a simple, high-performance, running in single process, origin live server.<br/>
-SRS supports vhost, rtmp, [HLS](https://github.com/winlinvip/simple-rtmp-server/wiki/DeliveryHLS), transcoding, forward, http hooks. <br/>
+SRS supports [vhost](https://github.com/winlinvip/simple-rtmp-server/wiki/RtmpUrlVhost), rtmp, [HLS](https://github.com/winlinvip/simple-rtmp-server/wiki/DeliveryHLS), transcoding, forward, http hooks. <br/>
 Blog: [http://blog.csdn.net/win_lin](http://blog.csdn.net/win_lin) <br/>
 See also: [https://github.com/winlinvip/simple-rtmp-server](https://github.com/winlinvip/simple-rtmp-server) <br/>
 See also: [http://winlinvip.github.io/simple-rtmp-server](http://winlinvip.github.io/simple-rtmp-server) <br/>