Update library.properties

fixed URL in properties

library.properties

@@ -5,5 +5,5 @@ maintainer=AL <[email protected]>
 sentence=Allows Arduino boards to serial communicate with Mitsubishi heat pumps via port cn105
 paragraph=Currently only support Mitsubishi Heat Pumps<br/>Library allows to pass a reference of the Serial you wish to use, such as Serial(esp8266) or Serial1(arduino micro pro).<br/>The library will "begin" the serial comms at 2400baud 8bits even parity.<br/>Make sure your board can handle 5V TTL, otherwise use a level shifter.<br/>Pull TX and RX to 5V with 10k resistors, otherwise the heat pump will not accept the connection.
 category=Device Control
-url=http://http://www.mitsubishicomfort.com/
-architectures=*
+url=http://www.mitsubishicomfort.com/
+architectures=*