Better docs

Signed-off-by: Thomas Citharel <tcit@tcit.fr>

Nicer docs

No 3rd stage

Add mix.deps get before docs

Add :ex_doc on test env so that it runs into CI

test/mobilizon_web/resolvers/user_resolver_test.exs

@@ -4,7 +4,7 @@ defmodule MobilizonWeb.Resolvers.UserResolverTest do
   alias Mobilizon.Actors.Actor
   alias Mobilizon.Users.User
   alias MobilizonWeb.AbsintheHelpers
-  alias Mobilizon.Users.Service.ResetPassword
+  alias Mobilizon.Service.Users.ResetPassword
   import Mobilizon.Factory
   use Bamboo.Test