Improve docs for matching macro arguments on break!
Improve docs for matching macro arguments on break!

See #7155.

pedrosnk/elixir,joshprice/elixir,elixir-lang/elixir,michalmuskala/elixir,kelvinst/elixir,kimshrier/elixir,lexmag/elixir,gfvcastro/elixir,pedrosnk/elixir,lexmag/elixir,ggcampinho/elixir,ggcampinho/elixir,kelvinst/elixir,kimshrier/elixir,gfvcastro/elixir