sendControlChange and sendControlChange14 use parameterNumber in the interface definition in the docs:
midi.sendControlChange (port, channel, parameterNumber, value)
but then use controllerNumber for everything else including the argument explanations and in the code examples:
controllerNumber - integer, an identifier of the Control Change (0 … 127).
Likely a copy paste error from the RPN related send functions.
Not a big deal just something to fix up next time you are in the docs.