I was not aware the official Scaladoc guidelines had changed. The scalafmt “Scaladoc” setting matches the old style, so does the current “use scaladoc indent for leading asterisk” setting in the IntelliJ Scala plugin.
I left a comment in https://github.com/scala/scala.github.com/pull/801#pullrequestreview-44702920
I’m not convinced it’s a good idea to advertise three nuanced styles, this will only further tax tooling developers. I like the idea of versioning the style guide as proposed by @heathermiller and promoting a single style decided with an open process like the Rust fmt-rfcs (thanks for the link @dwijnand). This would at least help manage the proliferation of configuration options in scalafmt (see http://scalameta.org/scalafmt/#Other).