py/nlrx64: Fix typo in comment.
py/nlrx64: Fix typo in comment.

henriknelson/micropython,henriknelson/micropython,bvernoux/micropython,adafruit/circuitpython,adafruit/circuitpython,bvernoux/micropython,bvernoux/micropython,adafruit/circuitpython,adafruit/circuitpython,adafruit/circuitpython,adafruit/circuitpython,bvernoux/micropython,bvernoux/micropython,henriknelson/micropython,henriknelson/micropython,henriknelson/micropython