Make "No PMP or UPnP NAT detected" message a tad more clear

git-svn-id: http://svn.freeswitch.org/svn/freeswitch/trunk@15345 d0543943-73ff-0310-b7d9-9358b9ac24b2

src/switch_nat.c

@@ -409,7 +409,7 @@ SWITCH_DECLARE(void) switch_nat_init(switch_memory_pool_t *pool)
 			switch_nat_thread_start();
 		}
 	} else {
-		switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_INFO, "No PMP or UPnP NAT detected!\n");
+		switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_INFO, "No PMP or UPnP NAT devices detected!\n");
 	}
 	first_init = SWITCH_FALSE;
 }