More doctests for Regex.captures and fixed return type doc
More doctests for Regex.captures and fixed return type doc

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