Fix some wording in the IO documentation (#7111)
Fix some wording in the IO documentation (#7111)


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