Add inofrmation about NeoPixels in neopixel_write module

Author: tekktrik

shared-bindings/neopixel_write/__init__.c

@@ -91,7 +91,19 @@ STATIC void check_for_deinit(digitalio_digitalinout_obj_t *self) {
 //|   pin = digitalio.DigitalInOut(board.NEOPIXEL)
 //|   pin.direction = digitalio.Direction.OUTPUT
 //|   pixel_off = bytearray([0, 0, 0])
-//|   neopixel_write.neopixel_write(pin, pixel_off)"""
+//|   neopixel_write.neopixel_write(pin, pixel_off)
+//|
+//| .. note::
+//|
+//|     This library is typically not used by user level code.
+//|
+//|     For more information on actually using NeoPixels, refer to the CircuitPython
+//|     Essentials Learn guide: https://learn.adafruit.com/circuitpython-essentials/circuitpython-neopixel
+//|
+//|     For a much more thorough guide about using NeoPixels, refer to the Adadfruit NeoPixel Überguide:
+//|     https://learn.adafruit.com/adafruit-neopixel-uberguide
+//|
+//| """
 //|
 //| def neopixel_write(digitalinout: digitalio.DigitalInOut, buf: ReadableBuffer) -> None:
 //|     """Write buf out on the given DigitalInOut.