Mark website content as outdated.

[julienrf]

The Scala 3 documentation is now hosted at https://docs.scala-lang.org.

There are still two issues:

• scaladoc emits links that look like href="" https: docs.scala-lang.org scala3 reference overview.html"" (instead of href="https://docs.scala-lang.org/scala3/reference/overview.html"), I’m not sure where the problem comes from 🤔
• the dark theme does not play well with the “aside.warning” CSS rule.

Can someone experienced with scaladoc help with these issue?

[julienrf]

[julienrf]

With the help of @romanowski, I managed to fix the two issues.

Here is how it looks like in the light theme:

And this is how it looks like in the dark theme: