Fix markup.

Author: Castaglia

mod_proxy.html

@@ -1586,7 +1586,6 @@ <h3><a name="ProxyTLSEngine">ProxyTLSEngine</a></h3>
 
   <p>
   <li><em>MatchClient</em>
-  <li>
     <p>
     Use of SSL/TLS to the backend server will attempt to <em>match</em> the
     SSL/TLS usage of the frontend client.  Thus if the frontend client uses