app_lua: fixed name of module in modparam examples

- added note about submodule sr.registrar

modules/app_lua/README

@@ -120,7 +120,7 @@ Chapter 1. Admin Guide
 
    Example 1.1. Set load parameter
 ...
-modparam("lua", "load", "/usr/local/etc/kamailio/lua/myscript.lua")
+modparam("app_lua", "load", "/usr/local/etc/kamailio/lua/myscript.lua")
 ...
 
 3.2. register (string)
@@ -131,6 +131,8 @@ modparam("lua", "load", "/usr/local/etc/kamailio/lua/myscript.lua")
      * auth_db - register functions from auth_db module under
        'sr.auth_db'.
      * maxfwd - register functions from maxfwd module under 'sr.maxfwd'.
+     * registrar - register functions from registrar module under
+       'sr.registrar'.
      * rr - register functions from rr module under 'sr.rr'.
      * sqlops - register functions from sqlops module under 'sr.sqlops'.
      * sl - register functions from sl module under 'sr.sl'.
@@ -143,7 +145,7 @@ modparam("lua", "load", "/usr/local/etc/kamailio/lua/myscript.lua")
 
    Example 1.2. Set register parameter
 ...
-modparam("lua", "register", "sl")
+modparam("app_lua", "register", "sl")
 ...
 
 4. Exported Functions

modules/app_lua/doc/app_lua_admin.xml

@@ -96,7 +96,7 @@
 		<title>Set <varname>load</varname> parameter</title>
 		<programlisting format="linespecific">
 ...
-modparam("lua", "load", "/usr/local/etc/kamailio/lua/myscript.lua")
+modparam("app_lua", "load", "/usr/local/etc/kamailio/lua/myscript.lua")
 ...
 </programlisting>
 	    </example>
@@ -127,6 +127,12 @@ modparam("lua", "load", "/usr/local/etc/kamailio/lua/myscript.lua")
 				module under 'sr.maxfwd'.
 			</para>
 		    </listitem>
+		    <listitem>
+			<para>
+				<emphasis>registrar</emphasis> - register functions from
+				registrar module under 'sr.registrar'.
+			</para>
+		    </listitem>
 		    <listitem>
 			<para>
 				<emphasis>rr</emphasis> - register functions from rr module
@@ -165,7 +171,7 @@ modparam("lua", "load", "/usr/local/etc/kamailio/lua/myscript.lua")
 		<title>Set <varname>register</varname> parameter</title>
 		<programlisting format="linespecific">
 ...
-modparam("lua", "register", "sl")
+modparam("app_lua", "register", "sl")
 ...
 </programlisting>
 	    </example>