[BUG] Fix the colalign functionality to ScipyDist class as specified in the docstrings

[fnhirwa]

This Pull request adds the colalign functionality to the ScipyDist class as specified in the docstring and corrected the formatting of the docstring of the class.

Reference Issues/PRs

FIxes #1942

What does this implement/fix? Explain your changes.

Does your contribution introduce a new dependency? If yes, which one?

What should a reviewer concentrate their feedback on?

Did you add any tests for the change?

Any other comments?

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• I've added the estimator to the API reference - in docs/source/api_reference/taskname.rst, follow the pattern.
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[fkiraly]

Nice!!

I almost forgot about this one, good that you unearthed it!

Looks correct, I'll start the tests.