message: docs(ot1): Fix small typo in OT1 documentation
  The comment states "Transfer 100uL from the plate's 'A1' well to its 'A2' well" but the code had B1 instead of A2
diff: @@ -42,7 +42,7 @@ The design goal of the Opentrons API is to make code readable and easy to unders
  Add a 200uL pipette to axis 'b', and tell it to use that tip rack
  - Transfer 100uL from the plate's 'A1' well to it's 'A2' well
  + Transfer 100uL from the plate's 'A1' well to its 'A2' well
  If we were to rewrite this with the Opentrons API, it would look like the following:
  @@ -59,7 +59,7 @@ If we were to rewrite this with the Opentrons API, it would look like the follow
  pipette = instruments.Pipette(axis='b', max_volume=200, tip_racks=[tiprack])
  # commands
  - pipette.transfer(100, plate.wells('A1'), plate.wells('B1'))
  + pipette.transfer(100, plate.wells('A1'), plate.wells('A2'))
  **********************
  