update info to reflect use of webdav

ms10_042_helpctr_xss_cmd_exec.rb doesn't tell you that it's going to
use webdav, and it's options dont' have the (Don't change) warning for
SRVPORT and URIPATH.  This update fixes all that

Author: kernelsmith

modules/exploits/windows/browser/ms10_042_helpctr_xss_cmd_exec.rb

@@ -38,6 +38,9 @@ def initialize(info = {})
 				available and will use one if possible. In the case of both IE8 and WMP11, the
 				exploit defaults to using an iframe on IE8, but is configurable by setting the
 				DIALOGMECH option to "none" or "player".
+
+				This module creates a WebDAV service from which the payload is copied to the
+				victim machine.
 			},
 			'Author'		=>
 				[
@@ -72,8 +75,8 @@ def initialize(info = {})
 
 		register_options(
 			[
-				OptPort.new(	'SRVPORT',		 [ true, "The daemon port to listen on", 80 ]),
-				OptString.new(	'URIPATH',		 [ true, "The URI to use.", "/" ]),
+				OptPort.new(	'SRVPORT',		 [ true,  "The daemon port to listen on (do not change)", 80 ]),
+				OptString.new(	'URIPATH',		 [ true,  "The URI to use (do not change).", "/" ]),
 				OptString.new(	'DIALOGMECH',	 [ true, "IE8/WMP11 trigger mechanism (none, iframe, or player).", "iframe"])
 			], self.class)