Merge pull request #122 from arduino/jhansson-ard/schematic-update

Jhansson ard/schematic update [MKC-381]

Author: jhansson-ard

content/built-in-examples/09.usb/ButtonMouseControl/ButtonMouseControl.md

@@ -38,7 +38,7 @@ Connect your board to your computer with a micro-USB cable. The buttons are conn
 
 ![](assets/circuit.png)
 
-###Schematic 
+### Schematic 
 
 ![](assets/schematic.png)