https://docs.scala-lang.org/overviews/collections/maps.html is one of the most popular pages visited from google, however it covers content for the 2.12 collections, with a notice to click on the updated version (/overviews/collections-2.13).
Should we swap the state of things and make the 2.13 collections the default from https://docs.scala-lang.org/overviews/collections?