Update README.md

Author: 1technophile

README.md

@@ -4,7 +4,7 @@ Tutorial and schema are there https://1technophile.blogspot.com/2016/09/433tomqt
 433nIRtoMQTTto433nIR - ESP8266  gateway between 433mhz, infrared and MQTT on both directions
 Tutorial and schema are there https://1technophile.blogspot.fr/2016/11/433nIRtomqttto433nIR-bidirectional-esp8266.html
 
-433toMQTTto433nFan_ESP8266 - ESP8266 gateway between 433mhz and a fan's remote control, from MQTT to the fan only.
+examples_with_gpio_usage/433toMQTTto433nFan_ESP8266 - ESP8266 gateway between 433mhz and a fan's remote control, from MQTT to the fan only.
 Tutorial is here https://github.com/rickybrent/433toMQTTto433_ESP8266/wiki/Flower-Angel-18R-ST6
 
 These gateways can be integrated with home automation systems like Openhab or Home assistant thanks to the MQTT protocol.