Fix Latex typesetting in documentation

[cyyever]

What does this PR do?

As the title says.

Before submitting

• 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,
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• Was this discussed/approved via a Github issue or the forum? Please add a link
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• Did you make sure to update the documentation with your changes? Here are the
  documentation guidelines, and
  here are tips on formatting docstrings.
• Did you write any new necessary tests?

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[Rocketknight1]

cc @stevhliu!

[HuggingFaceDocBuilderDev]

The docs for this PR live here. All of your documentation changes will be reflected on that endpoint. The docs are available until 30 days after the last update.

[stevhliu]

Hmm, the formatting looks incorrect compared to before (your changes on the left below) ?

[cyyever]

@stevhliu I am sure that $...$ is a widely supported flavour for inline Latex math formulas in markdown files (.md or .mdx), as Google and other MD editors/viewers/linters suggest. However, our documentation is generated by doc-builder, which recognises only \\( .... \\) in preprocessing.
A better approach is patching it to support both $...$ and \\( ... \\), it is not hard and may I propose a PR there and seek your review?