update sentences

Author: Alice Pintus

library.properties

@@ -2,7 +2,7 @@ name=Servo
 version=1.1.1
 author=Michael Margolis, Arduino
 maintainer=Arduino <[email protected]>
-sentence=Allows Arduino boards to control a variety of servo motors. For all Arduino boards.
+sentence=Allows Arduino/Genuino boards to control a variety of servo motors. 
 paragraph=This library can control a great number of servos.<br />It makes careful use of timers: the library can control 12 servos using only 1 timer.<br />On the Arduino Due you can control up to 60 servos.<br />
 category=Device Control
 url=http://www.arduino.cc/en/Reference/Servo