DOC: Upgraded Docstring pandas.DataFrame.dot
- [ ] closes #xxxx
- [ ] tests added / passed
- [x ] passes `git diff upstream/master -u -- "*.py" | flake8 --diff`
- [ ] whatsnew entry

Hello @HubertKl! Thanks for submitting the PR.

 - There are no PEP8 issues in the file [`pandas/core/frame.py`](https://github.com/HubertKl/pandas/blob/04268cc785071b5c8c5c528531afb7ee3e2fff9f/pandas/core/frame.py) !

 # [Codecov](https://codecov.io/gh/pandas-dev/pandas/pull/23024?src=pr&el=h1) Report
> Merging [#23024](https://codecov.io/gh/pandas-dev/pandas/pull/23024?src=pr&el=desc) into [master](https://codecov.io/gh/pandas-dev/pandas/commit/67faf6c32c52b55ed61b01d72841a703dcc8d210?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/23024/graphs/tree.svg?width=650&token=eZ4WkYLtcO&height=150&src=pr)](https://codecov.io/gh/pandas-dev/pandas/pull/23024?src=pr&el=tree)

```diff
@@           Coverage Diff           @@
##           master   #23024   +/-   ##
=======================================
  Coverage    92.2%    92.2%           
=======================================
  Files         162      162           
  Lines       51700    51700           
=======================================
  Hits        47671    47671           
  Misses       4029     4029
```

| Flag | Coverage Δ | |
|---|---|---|
| #multiple | `90.6% <ø> (ø)` | :arrow_up: |
| #single | `43.02% <ø> (ø)` | :arrow_up: |

| [Impacted Files](https://codecov.io/gh/pandas-dev/pandas/pull/23024?src=pr&el=tree) | Coverage Δ | |
|---|---|---|
| [pandas/core/frame.py](https://codecov.io/gh/pandas-dev/pandas/pull/23024/diff?src=pr&el=tree#diff-cGFuZGFzL2NvcmUvZnJhbWUucHk=) | `96.91% <ø> (ø)` | :arrow_up: |

------

[Continue to review full report at Codecov](https://codecov.io/gh/pandas-dev/pandas/pull/23024?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/23024?src=pr&el=footer). Last update [67faf6c...89e2be4](https://codecov.io/gh/pandas-dev/pandas/pull/23024?src=pr&el=lastupdated). Read the [comment docs](https://docs.codecov.io/docs/pull-request-comments).
 @HubertKl do you have time to address the review comments and fix the conflicts? I tried to address the issues. Sorry for the delay but I didn't figure that the review would append only now. It is done. @HubertKl do you have time to merge master into your branch, so we can merge? @jreback this should be ready to be merged thanks @HubertKl 