Fixed an issue of documentation inconsistency

src/modules/mavlink/mavlink_main.cpp

@@ -3031,6 +3031,8 @@ $ mavlink stream -u 14556 -s HIGHRES_IMU -r 50
 #endif
 	PRINT_MODULE_USAGE_PARAM_STRING('m', "normal", "custom|camera|onboard|osd|magic|config|iridium|minimal",
 					"Mode: sets default streams and rates", true);
+	PRINT_MODULE_USAGE_PARAM_STRING('n', "SoftAp", "SoftAp|wlan|name of custom wifi interface",
+					"wifi interface name", true);
 	PRINT_MODULE_USAGE_PARAM_FLAG('f', "Enable message forwarding to other Mavlink instances", true);
 	PRINT_MODULE_USAGE_PARAM_FLAG('w', "Wait to send, until first message received", true);
 	PRINT_MODULE_USAGE_PARAM_FLAG('x', "Enable FTP", true);