fix spelling

kamailio/auth.cfg

@@ -57,11 +57,11 @@ route[SETUP_AUTH_HEADERS]
 
    #!ifdef REGISTRAR_ROLE
 
-   $avp(is_registred) = "false";
+   $avp(is_registered) = "false";
    $xavp(regcfg=>match_received) = $su;
    if (registered("location","$fu", 2, 1) != 1) return;
    
-   $avp(is_registred) = "true";
+   $avp(is_registered) = "true";
    #!ifdef WITH_AUTH_TOKEN
    route(AUTH_TOKEN);
    #!else