Updated Programming Debugging the pyboard using ST Link v2 (markdown)

Programming-Debugging-the-pyboard-using-ST-Link-v2.md

@@ -31,7 +31,7 @@ From the [micropython README](https://github.com/micropython/micropython#the-stm
 
 This is needed because the programming pins on the pyboard are shared with LEDs, so if the MicroPython firmware it running, it conflicts with the ST-Link/v2 programming.
 
-In the following diagram, P1/DFU is labelled BOOT.
+In the following diagram, P1/DFU is labelled BOOT0.
 
 ![pvbv11-pinout](https://micropython.org/resources/pybv11-pinout.jpg)