message: docs: fix PD support page link
diff: @@ -41,7 +41,7 @@ Easily upload a protocol, calibrate positions, and run your experiment from your
  Easily create a protocol to run on your robot with this graphical tool.
  - [Access Here](https://designer.opentrons.com/)
  -- [Documentation](https://support.opentrons.com/en/collections/493886-protocol-designer)
  +- [Documentation](https://support.opentrons.com/s/protocol-designer)
  - [Source code](./protocol-designer)
  ## Contributing
  