STY: fstrings, repr pandas/io/html.py
- [x] ref #29547 #29886
- [x] tests added / passed
- [x] passes `black pandas`
- [x] passes `git diff upstream/master -u -- "*.py" | flake8 --diff`
- [ ] whatsnew entry

Kicking off CI again - its this test. https://github.com/pandas-dev/pandas/issues/30031 @alimcmaster1 Travis passed before, right?

Is there anything wrong with the changes? any suggestions? Looks like a segfault on the travis run unrelated to your changes @MomIsBestFriend  thanks @MomIsBestFriend 