Clarify docs for List.to_integer/1 (#9443)
Clarify docs for List.to_integer/1 (#9443)

[ci skip]

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