Convert docstrings to google format

[ConnorStoneAstro]

describe the content in question

All AutoProf methods require docstrings, these should be formatted in google notation. This notation is easily readable in text format as well, making it useful for help strings at the interpreter level as well.

example use case

Example google notation docs can be seen here: https://www.sphinx-doc.org/en/master/usage/extensions/example_google.html

brief outline of updated documentation

This only applies to docstrings

[ConnorStoneAstro]

Ultimately joopyter book has struggled with every docs format, so I am using markdown now and manually building notebooks with the docs. This is closed by #267