Edit the docstring of `image_processing_donut` to match code
# What does this PR do?

It changes the list of arguments in the the docstring of the class `DonutImageProcessor`, for the current docstring does not match the list of parameters in the code.

## Before submitting
- [x] This PR fixes a typo or improves the docs (you can dismiss the other checks if that's the case).
- [ ] Did you read the [contributor guideline](https://github.com/huggingface/transformers/blob/main/CONTRIBUTING.md#start-contributing-pull-requests),
      Pull Request section?
- [ ] Was this discussed/approved via a Github issue or the [forum](https://discuss.huggingface.co/)? Please add a link
      to it if that's the case.
- [ ] Did you make sure to update the documentation with your changes? Here are the
      [documentation guidelines](https://github.com/huggingface/transformers/tree/main/docs), and
      [here are tips on formatting docstrings](https://github.com/huggingface/transformers/tree/main/docs#writing-source-documentation).
- [ ] Did you write any new necessary tests?


## Who can review?

Documentation: @sgugger
Donut: @amyeroberts @alaradirik 


_The documentation is not available anymore as the PR was closed or merged._<|||||>@vermouthmjl If running `make style` didn't resolve the `check_code_quality` checks, make sure the most recent formatting libraries are installed using `pip install -e .[quality]`