Improve documentation for the Mix modukle (#7027)
Improve documentation for the Mix modukle (#7027)

[ci skip]
kimshrier/elixir,joshprice/elixir,gfvcastro/elixir,michalmuskala/elixir,lexmag/elixir,kelvinst/elixir,lexmag/elixir,gfvcastro/elixir,ggcampinho/elixir,pedrosnk/elixir,ggcampinho/elixir,pedrosnk/elixir,elixir-lang/elixir,kelvinst/elixir,kimshrier/elixir