DOC: update file path descriptions in IO docstrings
- [x] closes #24321
- [ ] tests added / passed
- [x] passes `git diff upstream/master -u -- "*.py" | flake8 --diff`
- [ ] whatsnew entry

Validate Docstrings script output:

```
 ✔  python scripts/validate_docstrings.py pandas.io.parquet.read_parquet                                                                                                                                                       (pandas-dev)

################################################################################
################## Docstring (pandas.io.parquet.read_parquet) ##################
################################################################################

Load a parquet object from the file path, returning a DataFrame.

.. versionadded 0.21.0

Parameters
----------
path : various
    Either a path to a file (a :class:`python:str`,
    :class:`python:pathlib.Path`,
    or :class:`py:py._path.local.LocalPath`),
    URL (including http, ftp, and S3 locations), or any object
    with a ``read()`` method (such as an open file or
    :class:`~python:io.BytesIO`).
columns : list, default=None
    If not None, only these columns will be read from the file.

    .. versionadded 0.21.1
engine : {'auto', 'pyarrow', 'fastparquet'}, default 'auto'
    Parquet library to use. If 'auto', then the option
    ``io.parquet.engine`` is used. The default ``io.parquet.engine``
    behavior is to try 'pyarrow', falling back to 'fastparquet' if
    'pyarrow' is unavailable.
kwargs are passed to the engine

Returns
-------
DataFrame

################################################################################
################################## Validation ##################################
################################################################################

5 Errors found:
	Parameters {**kwargs} not documented
	Unknown parameters {kwargs are passed to the engine}
	Parameter "kwargs are passed to the engine" has no type
	Parameter "kwargs are passed to the engine" has no description
	Return value has no description
2 Warnings found:
	See Also section not found
	No examples section found
```