Update library.properties

Author: alrevuelta

library.properties

@@ -4,6 +4,6 @@ author=alrevuelta
 maintainer=alrevuelta <alvrevuelta@gmail.com>
 sentence=Provides functions to handle the SEN 10724 board.
 paragraph=To be used with the SEN-10724 9 degrees of freedom sensor stick sold at Sparkfun, which contains three sensors (ADXL345 accelerometer, ITG-3200 gyroscope and HMC5883L magnetometer). Different functions are provided that allow to read data from the sensors, change its configuration parameters and calibrate them.
-category=Other
-url=-
+category=Sensors
+url=https://github.com/alrevuelta/SEN10724
 architectures=*