docs: include option 'delete_rows' into `DataFrame.to_sql`
- [x] closes #xxxx (Replace xxxx with the GitHub issue number)
- [x] [Tests added and passed](https://pandas.pydata.org/pandas-docs/dev/development/contributing_codebase.html#writing-tests) if fixing a bug or adding a new feature
- [x] All [code checks passed](https://pandas.pydata.org/pandas-docs/dev/development/contributing_codebase.html#pre-commit).
- [x] Added [type annotations](https://pandas.pydata.org/pandas-docs/dev/development/contributing_codebase.html#type-hints) to new arguments/methods/functions.
- [ ] Added an entry in the latest `doc/source/whatsnew/vX.X.X.rst` file if fixing a bug or adding a new feature.

Hello folks, I missed to add the documentation in this place so it is a patch to the original [PR](https://github.com/pandas-dev/pandas/pull/60376).

https://pandas.pydata.org/pandas-docs/dev/reference/api/pandas.DataFrame.to_sql.html#
There's no mention to `delete_rows` ☝️ .

Please let me know if there's any other place :)

cc @WillAyd , @mroeschke 
Thanks @gmcrocetti 