Minor changes to the keyboard and mouse controller examples

Author: shfitz

hardware/arduino/sam/libraries/USBHost/examples/KeyboardController/KeyboardController.ino

@@ -9,7 +9,7 @@
  
  http://arduino.cc/en/Tutorial/KeyboardController
  
- This samlple code is part of the public domain.
+ This sample code is part of the public domain.
  */
 
 

hardware/arduino/sam/libraries/USBHost/examples/MouseController/MouseController.ino

@@ -9,7 +9,7 @@
  
  http://arduino.cc/en/Tutorial/MouseController
  
- This samlple code is part of the public domain.
+ This sample code is part of the public domain.
  */
 
 // Require mouse control library