DOC: Add examples to the method MultiIndex.is_lexsorted()
- [ ] xref #32179
- [ ] tests added / passed
- [ ] passes `black pandas`
- [ ] passes `git diff upstream/master -u -- "*.py" | flake8 --diff`
- [ ] whatsnew entry

Sure, happy to add more clarification to this function. I added this example with some explanation, though just made it shorter, so it would be easier to follow. Thanks @RaisaDZ 