Document default argument operator (`\\`) (#6035)
Document default argument operator (`\\`) (#6035)


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