[DOC] Added all Regressors to the Documentation + small fixes

[Moonzyyy]

What does this implement/fix? Explain your changes.

Fixes #1500, added all the new regressors to the document and changed the page to have all the regressors in alphabetical order for easier readability. Also fixed a spelling mistake in the installation page.

Also added to the CSS file to fix issues arising with Sphinx .autosummary. An issue would happen where the class.rst template would sometimes push the classh definition to the right of the page. This happened due to margin errors of the class.rst template (at least thats what I figured after messing around with it). This addition to the CSS file has not caused any errors elsewhere that contains .autosummary from what I have checked.

Any other comments?

Should specific things such as lists be kept alphabetical or should I ignore this in the future?

[aeon-actions-bot]

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[MatthewMiddlehurst]

CI Failure is unrelated, you can merge the most recent main changes.

There appears to be no files changed currently, though.

[Moonzyyy]

Oh, that's weird you are right it says no files have been changed. Let me check what happened