Fix error in Task.Supervisor docs (#6489)
Fix error in Task.Supervisor docs (#6489)


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