Add multitrellis to docs and a couple typos

Author: Neradoc

docs/api.rst

@@ -6,3 +6,6 @@
 
 .. automodule:: adafruit_neotrellis.neotrellis
    :members:
+
+.. automodule:: adafruit_neotrellis.multitrellis
+   :members:

examples/neotrellis_multitrellis_simpletest.py

@@ -40,7 +40,7 @@ def blink(xcoord, ycoord, edge):
     # turn the LED on when a rising edge is detected
     if edge == NeoTrellis.EDGE_RISING:
         trellis.color(xcoord, ycoord, BLUE)
-    # turn the LED off when a rising edge is detected
+    # turn the LED off when a falling edge is detected
     elif edge == NeoTrellis.EDGE_FALLING:
         trellis.color(xcoord, ycoord, OFF)
 

examples/neotrellis_simpletest.py

@@ -27,7 +27,7 @@ def blink(event):
     # turn the LED on when a rising edge is detected
     if event.edge == NeoTrellis.EDGE_RISING:
         trellis.pixels[event.number] = CYAN
-    # turn the LED off when a rising edge is detected
+    # turn the LED off when a falling edge is detected
     elif event.edge == NeoTrellis.EDGE_FALLING:
         trellis.pixels[event.number] = OFF