[docs] Improve SVD pipeline docs

[a-r-r-o-w]

What does this PR do?

Makes the documentation of SVD pipe a little more consistent with other pipelines and fixes a few typos.

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• This PR fixes a typo or improves the docs (you can dismiss the other checks if that's the case).
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@yiyixuxu

[stevhliu]

Thanks for the improvements! 👍

[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.