Fix typo in comment
Fix typo in comment

descriptors should be plural

Co-authored-by: Dan Halbert <37e973bc139771928c5187558c1809f4c34a582f@halwitz.org>
adafruit/circuitpython,adafruit/circuitpython,adafruit/circuitpython,adafruit/circuitpython,adafruit/circuitpython,adafruit/circuitpython