docs: fix parameter name mismatches in docstrings

[eeshsaxena]

• Closes #xxxx
• I am familiar with the contributing guidelines
• Tests added
• Updates entries in docs/sphinx/source/reference for API changes.
• Adds description and name entries in the appropriate "what's new" file in docs/sphinx/source/whatsnew for all changes. Includes link to the GitHub Issue with :issue:`num` or this Pull Request with :pull:`num`. Includes contributor name and/or GitHub username (link with :ghuser:`user`).
• New code is fully documented. Includes numpydoc compliant docstrings, examples, and comments where necessary.
• Pull request is nearly complete and ready for detailed review.
• Maintainer: Appropriate GitHub Labels and Milestone are assigned to the Pull Request and linked Issue.

Fixes several docstrings where the documented parameter name does not match the actual function signature:

File	Function	Docstring said	Signature has
pvlib/pvsystem.py	PVSystem.get_iam, Array.get_iam	aoi_model	iam_model
pvlib/solarposition.py	sun_rise_set_transit_ephem	time	times
pvlib/irradiance.py	_liujordan	pressure (not a parameter)	airmass (was undocumented)
pvlib/bifacial/infinite_sheds.py	_poa_sky_diffuse_pv	duplicated stale Parameters block with f_x, npoints	dhi, gcr, surface_tilt

Doc-only change, no behavior modified. Happy to add a whatsnew entry if maintainers want one for a docs-only fix - let me know which file it should go in.

[github-actions]

Hey @eeshsaxena! 🎉

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[kandersolar]

Thanks @eeshsaxena. The changes LGTM. I think a whatsnew note is not really needed here, but (if you like) please do push another commit to list yourself as a contributor in https://github.com/pvlib/pvlib-python/blob/main/docs/sphinx/source/whatsnew/v0.15.3.rst

The readthedocs CI failure is unrelated and can be ignored here.

[eeshsaxena]

Thanks @kandersolar! Added myself to the v0.15.3 contributors list.

[kandersolar]

Thanks @eeshsaxena!

[echedey-ls]

Wondering how did you spot these mismatchs @eeshsaxena ? Was it by running the codebase through some LLM or do you happen to use any more sophisticated tool?