Update docs for Macro.expand
Update docs for Macro.expand

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