Remove the link in the speaking-http-on-https error message.

    
With SNI, the link will usually be wrong. So better send no link at all.
    
PR: 50823


git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/trunk@1328326 13f79535-47bb-0310-9956-ffa450edef68