update doc url

Author: ErnestoELC

library.properties

@@ -5,6 +5,6 @@ maintainer=Arduino <[email protected]>
 sentence=Allows use of the Arduino Motor Carrier 
 paragraph=(Nano and MKR version)
 category=Signal Input/Output
-url=https://www.arduino.cc/en/Reference/MKRMotorCarrier
+url=https://www.arduino.cc/reference/en/libraries/ArduinoMotorCarrier/
 architectures=samd
 includes=ArduinoMotorCarrier.h