DOC: Fixing EX01 - Added examples
- [x] All [code checks passed](https://pandas.pydata.org/pandas-docs/dev/development/contributing_codebase.html#pre-commit).

Towards https://github.com/pandas-dev/pandas/issues/37875

No preview found for PR #53948. Did the docs build complete? /preview Website preview of this PR available at: https://pandas.pydata.org/preview/53948/ This last fail doesn't look like it's related to the example.  Thank you It looks green :)