WEB: Fix maintainers grid not displaying correctly (GH41438)
- [x] closes #41438 
- [x] Ensure all linting tests pass, see [here](https://pandas.pydata.org/pandas-docs/dev/development/contributing.html#code-standards) for how to run them

Screenshot taken on Google Chrome 90.0.4430.93

![screenshot](https://user-images.githubusercontent.com/18680207/118068760-ef740800-b370-11eb-902d-237da39e2b7f.png)

To reproduce, 
- go to https://pandas.pydata.org/about/team.html
- open developer tools
- go to elements tab
- navigate to <div class="row maintainers">
- edit as HTML
- delete <div class="row maintainers"> and the closing tag at the end
