Merging from upstream (https://github.com/adafruit/Adafruit_CircuitPython_MIDI.git) to pick up PR adafruit#6.

Author: Kevin J Walters

adafruit_midi/__init__.py

@@ -183,7 +183,7 @@ def pitch_bend(self, value, channel=None):
     def control_change(self, control, value, channel=None):
         """Sends a MIDI CC message.
 
-        :param int control: The controller number. Must be 0-15.
+        :param int control: The controller number. Must be 0-127.
         :param int value: The control value. Must be 0-127.
 
         """