DOC: Fix Order of parameters in docstrings
- [ ] closes #23596 
- [x] tests added / passed
- [x] passes `git diff upstream/master -u -- "*.py" | flake8 --diff`

Fix the following:

```diff
pandas.io.json.json_normalize: Wrong parameters order. Actual: ('data', 'record_path', 'meta', 'meta_prefix', 'record_prefix', 'errors', 'sep'). Documented: ('data', 'record_path', 'meta', 'record_prefix', 'meta_prefix', 'errors', 'sep')
pandas.crosstab: Wrong parameters order. Actual: ('index', 'columns', 'values', 'rownames', 'colnames', 'aggfunc', 'margins', 'margins_name', 'dropna', 'normalize'). Documented: ('index', 'columns', 'values', 'aggfunc', 'rownames', 'colnames', 'margins', 'margins_name', 'dropna', 'normalize')
pandas.Series.rolling: Wrong parameters order. Actual: ('window', 'min_periods', 'center', 'win_type', 'on', 'axis', 'closed'). Documented: ('window', 'min_periods', 'center', 'win_type', 'on', 'closed', 'axis')
pandas.DataFrame.rolling: Wrong parameters order. Actual: ('window', 'min_periods', 'center', 'win_type', 'on', 'axis', 'closed'). Documented: ('window', 'min_periods', 'center', 'win_type', 'on', 'closed', 'axis')
-pandas.DataFrame.to_html: Wrong parameters order. Actual: ('buf', 'columns', 'col_space', 'header', 'index', 'na_rep', 'formatters', 'float_format', 'sparsify', 'index_names', 'justify', 'bold_rows', 'classes', 'escape', 'max_rows', 'max_cols', 'show_dimensions', 'notebook', 'decimal', 'border', 'table_id'). Documented: ('buf', 'columns', 'col_space', 'header', 'index', 'na_rep', 'formatters', 'float_format', 'sparsify', 'index_names', 'justify', 'max_rows', 'max_cols', 'show_dimensions', 'bold_rows', 'classes', 'escape', 'notebook', 'decimal', 'border', 'table_id')
-pandas.DataFrame.to_string: Wrong parameters order. Actual: ('buf', 'columns', 'col_space', 'header', 'index', 'na_rep', 'formatters', 'float_format', 'sparsify', 'index_names', 'justify', 'line_width', 'max_rows', 'max_cols', 'show_dimensions'). Documented: ('buf', 'columns', 'col_space', 'header', 'index', 'na_rep', 'formatters', 'float_format', 'sparsify', 'index_names', 'justify', 'max_rows', 'max_cols', 'show_dimensions', 'line_width')
pandas.tseries.offsets.CustomBusinessDay: Wrong parameters order. Actual: ('n', 'normalize', 'weekmask', 'holidays', 'calendar', 'offset'). Documented: ('n', 'offset', 'normalize', 'weekmask', 'holidays', 'calendar')
pandas.tseries.offsets.CustomBusinessMonthEnd: Wrong parameters order. Actual: ('n', 'normalize', 'weekmask', 'holidays', 'calendar', 'offset'). Documented: ('n', 'offset', 'normalize', 'weekmask', 'holidays', 'calendar')
pandas.tseries.offsets.CustomBusinessMonthBegin: Wrong parameters order. Actual: ('n', 'normalize', 'weekmask', 'holidays', 'calendar', 'offset'). Documented: ('n', 'offset', 'normalize', 'weekmask', 'holidays', 'calendar')
pandas.tseries.offsets.CBMonthEnd: Wrong parameters order. Actual: ('n', 'normalize', 'weekmask', 'holidays', 'calendar', 'offset'). Documented: ('n', 'offset', 'normalize', 'weekmask', 'holidays', 'calendar')
pandas.tseries.offsets.CBMonthBegin: Wrong parameters order. Actual: ('n', 'normalize', 'weekmask', 'holidays', 'calendar', 'offset'). Documented: ('n', 'offset', 'normalize', 'weekmask', 'holidays', 'calendar')
pandas.tseries.offsets.CDay: Wrong parameters order. Actual: ('n', 'normalize', 'weekmask', 'holidays', 'calendar', 'offset'). Documented: ('n', 'offset', 'normalize', 'weekmask', 'holidays', 'calendar')
pandas.testing.assert_series_equal: Wrong parameters order. Actual: ('left', 'right', 'check_dtype', 'check_index_type', 'check_series_type', 'check_less_precise', 'check_names', 'check_exact', 'check_datetimelike_compat', 'check_categorical', 'obj'). Documented: ('left', 'right', 'check_dtype', 'check_index_type', 'check_series_type', 'check_less_precise', 'check_exact', 'check_names', 'check_datetimelike_compat', 'check_categorical', 'obj')```
Hello @thoo! Thanks for submitting the PR.

 - There are no PEP8 issues in the file [`pandas/core/frame.py`](https://github.com/thoo/pandas/blob/681d9191d09843ffa248fe27dfb677e9683e3f82/pandas/core/frame.py) !

 - There are no PEP8 issues in the file [`pandas/core/generic.py`](https://github.com/thoo/pandas/blob/681d9191d09843ffa248fe27dfb677e9683e3f82/pandas/core/generic.py) !

 - There are no PEP8 issues in the file [`pandas/core/reshape/pivot.py`](https://github.com/thoo/pandas/blob/681d9191d09843ffa248fe27dfb677e9683e3f82/pandas/core/reshape/pivot.py) !

 - There are no PEP8 issues in the file [`pandas/io/json/normalize.py`](https://github.com/thoo/pandas/blob/681d9191d09843ffa248fe27dfb677e9683e3f82/pandas/io/json/normalize.py) !

 - There are no PEP8 issues in the file [`pandas/io/parsers.py`](https://github.com/thoo/pandas/blob/681d9191d09843ffa248fe27dfb677e9683e3f82/pandas/io/parsers.py) !

 - There are no PEP8 issues in the file [`pandas/tseries/offsets.py`](https://github.com/thoo/pandas/blob/681d9191d09843ffa248fe27dfb677e9683e3f82/pandas/tseries/offsets.py) !

 - There are no PEP8 issues in the file [`pandas/util/testing.py`](https://github.com/thoo/pandas/blob/681d9191d09843ffa248fe27dfb677e9683e3f82/pandas/util/testing.py) !

 # [Codecov](https://codecov.io/gh/pandas-dev/pandas/pull/23611?src=pr&el=h1) Report
> Merging [#23611](https://codecov.io/gh/pandas-dev/pandas/pull/23611?src=pr&el=desc) into [master](https://codecov.io/gh/pandas-dev/pandas/commit/8ed92efc65b51a9010bd14e0e666fc722226e50a?src=pr&el=desc) will **not change** coverage.
> The diff coverage is `n/a`.

[![Impacted file tree graph](https://codecov.io/gh/pandas-dev/pandas/pull/23611/graphs/tree.svg?width=650&token=eZ4WkYLtcO&height=150&src=pr)](https://codecov.io/gh/pandas-dev/pandas/pull/23611?src=pr&el=tree)

```diff
@@           Coverage Diff           @@
##           master   #23611   +/-   ##
=======================================
  Coverage   92.25%   92.25%           
=======================================
  Files         161      161           
  Lines       51277    51277           
=======================================
  Hits        47305    47305           
  Misses       3972     3972
```

| Flag | Coverage Δ | |
|---|---|---|
| #multiple | `90.63% <ø> (ø)` | :arrow_up: |
| #single | `42.32% <ø> (ø)` | :arrow_up: |

| [Impacted Files](https://codecov.io/gh/pandas-dev/pandas/pull/23611?src=pr&el=tree) | Coverage Δ | |
|---|---|---|
| [pandas/core/reshape/pivot.py](https://codecov.io/gh/pandas-dev/pandas/pull/23611/diff?src=pr&el=tree#diff-cGFuZGFzL2NvcmUvcmVzaGFwZS9waXZvdC5weQ==) | `96.55% <ø> (ø)` | :arrow_up: |
| [pandas/core/window.py](https://codecov.io/gh/pandas-dev/pandas/pull/23611/diff?src=pr&el=tree#diff-cGFuZGFzL2NvcmUvd2luZG93LnB5) | `96.4% <ø> (ø)` | :arrow_up: |
| [pandas/tseries/offsets.py](https://codecov.io/gh/pandas-dev/pandas/pull/23611/diff?src=pr&el=tree#diff-cGFuZGFzL3RzZXJpZXMvb2Zmc2V0cy5weQ==) | `97.22% <ø> (ø)` | :arrow_up: |
| [pandas/util/testing.py](https://codecov.io/gh/pandas-dev/pandas/pull/23611/diff?src=pr&el=tree#diff-cGFuZGFzL3V0aWwvdGVzdGluZy5weQ==) | `86.71% <ø> (ø)` | :arrow_up: |
| [pandas/io/json/normalize.py](https://codecov.io/gh/pandas-dev/pandas/pull/23611/diff?src=pr&el=tree#diff-cGFuZGFzL2lvL2pzb24vbm9ybWFsaXplLnB5) | `96.87% <ø> (ø)` | :arrow_up: |

------

[Continue to review full report at Codecov](https://codecov.io/gh/pandas-dev/pandas/pull/23611?src=pr&el=continue).
> **Legend** - [Click here to learn more](https://docs.codecov.io/docs/codecov-delta)
> `Δ = absolute <relative> (impact)`, `ø = not affected`, `? = missing data`
> Powered by [Codecov](https://codecov.io/gh/pandas-dev/pandas/pull/23611?src=pr&el=footer). Last update [8ed92ef...5d7c5ce](https://codecov.io/gh/pandas-dev/pandas/pull/23611?src=pr&el=lastupdated). Read the [comment docs](https://docs.codecov.io/docs/pull-request-comments).
 @thoo I think in this case it makes more sense to change the order of the parameters, as you did initially. But let's do that in a separate PR, just leave the other changes here. I created #23612 to address the changes in `to_string` and `to_html`. thanks @thoo nice work!

@datapythonista is this check now automatic in code_checks? (if not, pls create an issue for this, if you don't already). @jreback I'm adding the docstring checks that are ready to #23614 which still requires some work.

I'll add the validation of the order the parameters, but there too it'll still fail, until #23614 is merged.