Programming Phoenix LiveView: book not updated to version 1.6 (p. 18)

In general, the book isn’t yet updated for Phoenix version 1.6. On page 18 of the book, the authors indicate that an auto generated of router.ex should contain:

scope "/", PentoWeb do
    pipe_through :browser
    live "/", PageLive, :index
end

This code is no longer generated. Specifically, the line:

live "/", PageLive, :index

This is troubling since this occurs in the “Getting to Know LiveView” section, the very section that should be easy to understand for first time users.