Normalize music_brainz -> musicbrainz spell

lib/music_library/records.ex

@@ -150,6 +150,6 @@ defmodule MusicLibrary.Records do
   end
 
   defp musicbrainz do
-    Application.get_env(:music_library, :music_brainz, MusicLibrary.Records.MusicBrainz.APIImpl)
+    Application.get_env(:music_library, :musicbrainz, MusicLibrary.Records.MusicBrainz.APIImpl)
   end
 end

lib/music_library/records/importer.ex

@@ -136,6 +136,6 @@ defmodule MusicLibrary.Records.Importer do
   end
 
   defp musicbrainz do
-    Application.get_env(:music_library, :music_brainz, MusicLibrary.Records.MusicBrainz.APIImpl)
+    Application.get_env(:music_library, :musicbrainz, MusicLibrary.Records.MusicBrainz.APIImpl)
   end
 end

lib/music_library_web/live/record_live/import_component.ex

@@ -34,7 +34,7 @@ defmodule MusicLibraryWeb.RecordLive.ImportComponent do
   defp result(assigns) do
     ~H"""
     <li
-      id={"music_brainz_" <> @release_group.id}
+      id={"musicbrainz_" <> @release_group.id}
       class="flex justify-between gap-x-6 py-5 hover:bg-gray-50"
     >
       <div class="flex min-w-0 gap-x-4">

test/music_library_web/live/record_index_test.exs

@@ -296,7 +296,7 @@ defmodule MusicLibraryWeb.RecordIndexTest do
       end)
 
       import_live
-      |> element("#music_brainz_#{first_result_id} button", "CD")
+      |> element("#musicbrainz_#{first_result_id} button", "CD")
       |> render_click()
 
       [record] = MusicLibrary.Repo.all(MusicLibrary.Records.Record)

test/test_helper.exs

@@ -1,5 +1,5 @@
 Mox.defmock(APIBehaviourMock, for: MusicLibrary.Records.MusicBrainz.APIBehaviour)
-Application.put_env(:music_library, :music_brainz, APIBehaviourMock)
+Application.put_env(:music_library, :musicbrainz, APIBehaviourMock)
 
 ExUnit.start()
 Ecto.Adapters.SQL.Sandbox.mode(MusicLibrary.Repo, :manual)