app_lua: doc updated with dispatcher sub-module

modules/app_lua/README

@@ -130,6 +130,8 @@ modparam("app_lua", "load", "/usr/local/etc/kamailio/lua/myscript.lua")
      * auth - register functions from auth module under 'sr.auth'.
      * auth_db - register functions from auth_db module under
        'sr.auth_db'.
+     * dispatcher - register functions from dispatcher module under
+       'sr.dispatcher'.
      * maxfwd - register functions from maxfwd module under 'sr.maxfwd'.
      * registrar - register functions from registrar module under
        'sr.registrar'.

modules/app_lua/doc/app_lua_admin.xml

@@ -121,6 +121,12 @@ modparam("app_lua", "load", "/usr/local/etc/kamailio/lua/myscript.lua")
 				module under 'sr.auth_db'.
 			</para>
 		    </listitem>
+		    <listitem>
+			<para>
+				<emphasis>dispatcher</emphasis> - register functions from
+				dispatcher module under 'sr.dispatcher'.
+			</para>
+		    </listitem>
 		    <listitem>
 			<para>
 				<emphasis>maxfwd</emphasis> - register functions from maxfwd