Title: Configuring Netty Servlet

Describe the issue:
In that section of the documentation, for the *acceptor* config you use the parameter "use-servlet". According to the HornetQ documentation it should be "use-invm" instead. I tried both and only the latter worked for me.


Suggestions for improvement:
Change "use-servlet" to "use-imvm" for the Nets Servlet Connector -> acceptor configuration example code.


Additional information:
The code for "TransportConstants.java" confirms that "use-servlet" is not a valid option for acceptors.

The exact configuration that worked for me was:

<acceptor name="netty-servlet">
  <factory-class>
    org.hornetq.core.remoting.impl.netty.NettyAcceptorFactory
  </factory-class>
  <param key="use-invm" value="true"/>
  <param key="host" value="org.hornetq"/>
</acceptor>