Add badge for CodeQL, security scan

README.md

@@ -1,7 +1,7 @@
 # SRS(Simple Realtime Server)
 
 ![](http://ossrs.net/gif/v1/sls.gif?site=github.com&path=/srs/4.0release)
-![](https://github.com/ossrs/srs/workflows/CodeQL/badge.svg)
+[![](https://github.com/ossrs/srs/workflows/CodeQL/badge.svg)](https://github.com/ossrs/srs/actions?query=workflow%3ACodeQL)
 [![](https://circleci.com/gh/ossrs/srs/tree/4.0release.svg?style=svg&circle-token=1ef1d5b5b0cde6c8c282ed856a18199f9e8f85a9)](https://circleci.com/gh/ossrs/srs/tree/4.0release)
 [![](https://codecov.io/gh/ossrs/srs/branch/4.0release/graph/badge.svg)](https://codecov.io/gh/ossrs/srs/branch/4.0release)
 [![](https://gitee.com/winlinvip/srs-wiki/raw/master/images/wechat-badge.png)](../../wikis/Contact#wechat)