Update README.md

Author: stas-demydiuk

README.md

@@ -3,7 +3,7 @@ Python plugin for Domoticz to add integration with [zigbee2mqtt](https://github.
 
 ## Prerequisites
 
-Setup and run zigbee2mqtt server (https://www.zigbee2mqtt.io/).
+Setup and run zigbee2mqtt server (https://www.zigbee2mqtt.io).
 
 ## Installation