Enable quokka with :module_directives rule

lib/mix/tasks/music_brainz/refresh_fixtures.ex

@@ -1,11 +1,11 @@
 defmodule Mix.Tasks.MusicBrainz.RefreshFixtures do
-  use Mix.Task
-
   @shortdoc "Fetch and recreate test fixtures that depend on network resources."
   @moduledoc """
   Fetch and recreate test fixtures that depend on network resources.
   """
 
+  use Mix.Task
+
   require Logger
 
   @fixtures_folder Path.join([File.cwd!(), "test/support/fixtures/music_brainz"])