Fix docstring formatting issues causing Sphinx autodoc warnings
Author: kurtmckee
Pull request: yes

# What does this PR do?

> [!NOTE]
>
> This was handwritten and tested by me, a human (I read your CONTRIBUTING doc.)
>
> Tagging @tomaarsen, as this is related to doc build fixes I'm doing in the huggingface/sentence-transformers repo that he's been reviewing.

These formatting problems appear as warnings when building the huggingface/sentence-transformers docs. That project uses the `TrainingArguments` class and uses the autodoc Sphinx extension for doc builds, which subsequently throws the warnings about the docstring.

Here is a representative warning:

```
sentence_transformers/base/training_args.py:
docstring of transformers.training_args.TrainingArguments.set_push_to_hub:20:
WARNING: Bullet list ends without a blank line; unexpected unindent. [docutils]
```

This commit is a whitespace-only fix. It was tested against the huggingface/sentence-transformers docs builds to confirm that the warnings in that project were resolved.


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Comments:
**CI Dashboard:** [View test results in Grafana](https://transformers-ci.lor-e.huggingface.cool/d/pytest-observability-by-pr/pytest-observability-branch?var-pr=46596)

As a bit of extra context for transformers reviewers, Sentence Transformers inherits a lot of docstrings from transformers, but ST uses Sphinx instead of `hf-doc-builder`, and Sphinx its rST is a bit stricter with indentation. So it benefits ST if transformers fixes these small docstring quirks.

(The docs for this PR haven't built yet, so I'm actually not sure if `hf-doc-builder` handles these correctly or if it was also broken there)

cc @stevhliu

- Tom Aarsen

Thanks for the merge! P.s. I thought there used to be an automatic docs build for every PR, do we not do that anymore?

- Tom Aarsen

we still do that, but i think for this PR, there was a token issue so the bot couldn't post a comment with the preview link