[docs-infra] Remove `https://mui.com/` from API descriptions links

[alexfauquette]

In the future, I think that we want to automatically remove https://mui.com/ from those links to have relative URLs.

Originally posted by @oliviertassinari in #43472 (comment)

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[tobilobasalawu]

Hi, can you assigned this issue to me. I would like to work on it

[tobilobasalawu]

Submitted a pull request @ Pull Request - #43496