DOC: Minor addition to str.split
- [x] Closes #44867  
- [ ] Added an entry in whatsnew

> Could you maybe add an example?

Nice idea.
I tried to add an integer and a boolean to the Series used for the already existing examples.

I'm thinking that it might be preferable to incorporate the method's behaviour in the already existing examples rather than adding new examples to show it off. Or am I wrong in this? Thanks @ChrisAlbertsen 