explain that timeout in receive/after block can be :infinity because variable values are allowed
explain that timeout in receive/after block can be :infinity because variable values are allowed

Update special_forms.ex

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