Update adafruit_displayio_ssd1306.py

Explain the test for a special resolution.
I expected the same formula to work for all board, but at least 32x64 screen have special need.

Author: dglaude

adafruit_displayio_ssd1306.py

@@ -80,7 +80,7 @@ def __init__(
             height = kwargs["width"]
             width = kwargs["height"]
         init_sequence[16] = height - 1  # patch mux ratio
-        if height == 32 and width == 64:  # FIX ME
+        if height == 32 and width == 64:  # Make sure this only apply to that resolution
             init_sequence[16] = 64 - 1  # FORCED for 64x32 because it fail with formula
         if height in (32, 16) and width != 64:
             init_sequence[25] = 0x02  # patch com configuration