updated Related Products; no Trellis here

Author: sommersoft

docs/index.rst

@@ -28,7 +28,11 @@ Table of Contents
 
     Too many Adafruit LED Matrices, 7-Segment Displays, and Breakout Boards to list. But here is a handy search link.
 
-Adafruit HT16K33 Products <https://www.adafruit.com/?q=ht16k33>
+    Adafruit HT16K33 Products <https://www.adafruit.com/?q=ht16k33>
+
+    Note: This library does not work with the Trellis 4x4 LED+Keypad board. For that product use:
+
+    CircuitPython Trellis Library <https://github.com/adafruit/Adafruit_CircuitPython_Trellis/releases/latest>
 
 .. toctree::
     :caption: Other Links