fix antiflood rate log

kamailio/antiflood-role.cfg

@@ -52,7 +52,7 @@ route[ANTIFLOOD_RATE_LIMIT]
             xlog("L_WARN", "$ci|end|dropping request from $fu due to rate of requests with source $si:$sp\n");
             drop();
         } else {
-            xlog("L_WARN", "$ci|end|request from $fu exceeded rate of requests with source $si:$sp\n");
+            xlog("L_WARN", "$ci|allowed|request from $fu exceeded rate of requests with source $si:$sp\n");
         }
     }
 }