Specify scheme in library.properties url value (#15)

The library.properties url property is used by the Arduino IDE to add a clickable "More info" link to the Library Manager entry for each library. The scheme must be specified in order for this link to be clickable.

Author: per1234

library.properties

@@ -5,7 +5,7 @@ maintainer=Arduino <[email protected]>
 sentence=Controlling the IoT MKR Carrier
 paragraph=Allows you to controll all the components included in the Explore IoT Kit
 category=Sensors + Relays
-url=arduino.cc
+url=https://www.arduino.cc/
 architectures=samd
 precompiled=false
 depends=Arduino_APDS9960,Arduino_BQ24195,Arduino_HTS221,Arduino_LPS22HB,Arduino_LSM6DS3,Adafruit BusIO,Adafruit DotStar,Adafruit GFX Library,Adafruit ST7735 and ST7789 Library,Arduino_MCHPTouch