Fix bad URL in library.properties

Author: per1234

library.properties

@@ -5,5 +5,5 @@ maintainer=Arduino <[email protected]>
 sentence=Allows an Arduino/Genuino board with USB capabilites to act as a Mouse.
 paragraph=This library plugs on the HID library. Can be used with or without other HID-based libraries (Keyboard, Gamepad etc)
 category=Device Control
-url=http://www.arduino.cc/en/Reference/Mouse
+url=https://www.arduino.cc/reference/en/language/functions/usb/mouse/
 architectures=*