Blog author text is not rendering as links

Created by: st0nebraker

Nick Moore reported that Blog author text is not currently rendering as links. The frontmatter allows for "author" and "authorUrl" but in at least the two posts linked, and probably more, the author titles don't end up being clickable. Is this a bug or are we inputting "authorUrl" incorrectly?

Relevant links: Asana card(s), Github issues, reference links, RFCs, docs, etc. https://github.com/sourcegraph/about/pull/5303 https://github.com/sourcegraph/about/blob/main/blogposts/2022/introducting-migrator-service.md + https://about.sourcegraph.com/blog/introducing-migrator-service/