Scala 3 highlighting broken

[b-studios]

There is a few problems with syntax highlighting of Scala3:

Most of them can be seen on this page: https://docs.scala-lang.org/scala3/guides/macros/macros.html

Keywords not highlighted as keywords:

• inline
• then

Other problems:

• quotes are recognized as character-start

We should look at the vscode grammar and tests: https://marketplace.visualstudio.com/items?itemName=scala-lang.scala

HighlightJS is included here: https://github.com/scala/docs.scala-lang/blob/d6e14d1b683df910998f6545bb860ea514295ceb/_includes/footer.html#L42-L44