Docs Hugo minor issues

Looking good. couple of minor quick things I noticed:

• The code syntax highlighting is not quite as good imo: https://getbootstrap.com/docs/4.5/getting-started/javascript/#sanitizer https://deploy-preview-32077--twbs-bootstrap.netlify.app/docs/4.5/getting-started/javascript/#sanitizer Maybe just need to add blue color: #006ee0 to class .nx ?

• Looks like an unnecessary extra line break at bottom of the browser list here: https://deploy-preview-32077--twbs-bootstrap.netlify.app/docs/4.5/getting-started/browsers-devices/#supported-browsers

Originally posted by @coliff in https://github.com/twbs/bootstrap/pull/32077#issuecomment-724113090