This link doesn't render. Take a look here and scroll down to see how it renders: https://github.com/pskopek/jboss-eap-quickstarts/tree/picketlink-sts/picketlink-sts

You might want to say something like: 

For more information about PicketLink see the [PicketLink Reference Documentation](http://docs.jboss.org/picketlink/2/2.1.7.Final/reference/html/).