DOC array_algos/take method format update
Not sure fill_value and indexer definitions in the _take_nd_ndarray method but filled out what I could
Hello @LucasHynes! Thanks for opening this PR. We checked the lines you've touched for [PEP 8](https://www.python.org/dev/peps/pep-0008) issues, and found:

* In the file [`pandas/core/array_algos/take.py`](https://github.com/pandas-dev/pandas/blob/5abe8864a84d9feb23e47ecf3150b50b1aa63134/pandas/core/array_algos/take.py):

> [Line 126:62](https://github.com/pandas-dev/pandas/blob/5abe8864a84d9feb23e47ecf3150b50b1aa63134/pandas/core/array_algos/take.py#L126): [W291](https://duckduckgo.com/?q=pep8%20W291) trailing whitespace

* In the file [`pandas/core/groupby/base.py`](https://github.com/pandas-dev/pandas/blob/5abe8864a84d9feb23e47ecf3150b50b1aa63134/pandas/core/groupby/base.py):

> [Line 31:13](https://github.com/pandas-dev/pandas/blob/5abe8864a84d9feb23e47ecf3150b50b1aa63134/pandas/core/groupby/base.py#L31): [W291](https://duckduckgo.com/?q=pep8%20W291) trailing whitespace

 Hi @LucasHynes, thanks for the pr! Looks like you've put up a few of these - while internal docstrings can be helpful, they are also pretty difficult to do correctly with significant internals knowledge. If interested in contributing to the docs, could have much larger positive user facing impact looking at any of the open issues labeled with `doc` (there are a lot!)

Regardless, for prs like this I'd recommend reading through https://pandas.pydata.org/docs/development/contributing_docstring.html (and the rest of the contributing guide, especially documentation section)