Remove redundant blank lines in iex helpers' docs
Remove redundant blank lines in iex helpers' docs

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