Docs: change wording about WithClauseError (#8122)
Docs: change wording about WithClauseError (#8122)

This way I hope people will not fall into the trap that no else has different error semantics, as mentioned above in the docs.

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