Update docs and typespecs for lock_status, closes #7125
Update docs and typespecs for lock_status, closes #7125

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