message: add name doctest pipette
diff: @@ -717,7 +717,7 @@ class Pipette(Instrument):
  <opentrons.robot.robot.Robot object at ...>
  >>> tiprack = containers.load('tiprack-200ul', 'E1', share=True)
  >>> p200 = instruments.Pipette(axis='a',
  - ... tip_racks=[tiprack], max_volume=200)
  + ... tip_racks=[tiprack], max_volume=200, name='p200')
  >>> p200.pick_up_tip() # doctest: +ELLIPSIS
  <opentrons.instruments.pipette.Pipette object at ...>
  >>> p200.aspirate(50, plate[0]) # doctest: +ELLIPSIS
  