message: docs(api): Clarify that protocol.comment's message is computed in simulation
  Clarify that protocol.comment does not allow real time communication which one might otherwise guess it did. (I realise use cases where simulation might be different from reality are rare).
diff: @@ -621,6 +621,10 @@ class ProtocolContext(CommandPublisher):
  """
  Add a user-readable comment string that will be echoed to the Opentrons
  app.
  +
  + The value of the message is computed during protocol simulation,
  + so cannot be used to communicate real-time information from the robot's
  + actual run.
  """
  pass
  