Apply linting to the important code blocks to make it readable
Author: ShubhamJagtap2000
Pull request: yes

Enhance user experience using py-linting

# What does this PR do?

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Fixes # (issue)


## Before submitting
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Comments:
Hello @stevhliu,

I have raised this PR to suggest some improvements to the docs. However, I haven't raised any ISSUE prior for this change for approval, I hope it is fine for this nature of the issue. 

I observed a wrong linting method to code-block in https://github.com/huggingface/transformers/tree/main/docs and did a change to it. Please review.

Please let me know if I should be raising the issue for this PR.

Thank you,
Shubham J.

The docs for this PR live [here](https://moon-ci-docs.huggingface.co/docs/transformers/pr_34449). All of your documentation changes will be reflected on that endpoint. The docs are available until 30 days after the last update.