Updated _Sidebar (markdown)

_Sidebar.md

@@ -7,6 +7,7 @@
 
 ## Python Boards and MCUs
 - [The pyb module](http://docs.micropython.org/en/latest/library/pyb.html)
+    - [pyboard documentation](http://docs.micropython.org/en/latest/)
 - [[Boards Summary|Boards Summary]]
 - [[Hardware Details|Hardware Details]] (need to compile pwm timers, servos, etc.)