[Swin2SR] Add doc tests (#20829)
* Fix doc tests
* Use Auto API
* Apply suggestion
* Revert "Apply suggestion"
This reverts commit cd9507a86644b4877c3e4a3d6c2d5919d9272dd7.
Co-authored-by: Niels Rogge <nielsrogge@Nielss-MacBook-Pro.local>
Co-authored-by: Niels Rogge <nielsrogge@Nielss-MBP.localdomain>