Modify description in jaxrs of subsystem to its correct sentence

Check and update the description to its correct sentance if needed.

/subsystem=jaxrs:read-resource-description

From:

description" => "\"ALL\" will enable the tracing feature. \"ON_DEMAND\" mode will give the control to client side: A client can send a tracing request via HTTP header and get the tracing info back from response

To:

 description" =>"\"ALL\" will enable the tracing feature. \"ON_DEMAND\" mode will give control to the client side: A client can send a tracing request via HTTP header and get the tracing info back from response headers. \
"OFF\" mode will disable the tracing feature, and this is the default mode. Note that it is suggested this is set to \"OFF\" for production servers."