Update formatting of versions in text
Update formatting of versions in text

Use `<code>` instead of `<pre>` and add the formatting on all mentions of a specific version.

`<pre>` is styled as a block element vs. `<code>` which is inline.
rossabaker/http4s,reactormonk/http4s,ZizhengTai/http4s,aeons/http4s,ChristopherDavenport/http4s,rossabaker/http4s,aeons/http4s,reactormonk/http4s,aeons/http4s,reactormonk/http4s,ZizhengTai/http4s,ChristopherDavenport/http4s,ChristopherDavenport/http4s,ZizhengTai/http4s,http4s/http4s