Replace quotation dash with "--"
Replace quotation dash with "--"

While correct, it is reported in  #4408 that it will not display correctly em-dashes in
Windows terminals.

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