When a doc section does not exist in another version.

[squeedee]

When we have a doc's section that does not exist in another section, we have two choices:

Redirect to a suitable page

If there is a similar page, then we go there. We think this is a good idea (tm)

eg: /docs/v1.0.0/awesome-stuff -> /docs/v1.1.0/awesome/stuff

Redirect to the version home

When there's no matching page, redirect to the version home.

This is current behavior but wonder if a 404 is actually less surprising:

/docs/v1.0.0/examples/some-great-example -> /docs/v0.6.0/

What this means is you're looking at "some great example" and the context changes to the root of the docs, which may be surprising? Alternatively we could have a friendly 404:

that page does not exist, if you changed versions, then perhaps this version does not have the feature you're looking for

This seems to be the extend of our options with hugo/netlify without serious engineering efforts. Thoughts?