Fix the SyncBooksTask to transform Roles with AuthorRolesTransformer.

lib/decentralised_book_index/sync/sync_tasks/sync_books_task.ex

@@ -3,6 +3,7 @@ defmodule DecentralisedBookIndex.SyncTasks.SyncBooksTask do
   alias DecentralisedBookIndex.Sync.ApiClients.FetchJsons
   alias DecentralisedBookIndex.Sync.DataTransformers.BookTransformer
   alias DecentralisedBookIndex.Sync.DataTransformers.BidsTransformer
+  alias DecentralisedBookIndex.Sync.DataTransformers.AuthorRolesTransformer
   alias DecentralisedBookIndex.Sync.BookSync
 
   alias DecentralisedBookIndex.Metadata.DBIServer
@@ -53,7 +54,7 @@ defmodule DecentralisedBookIndex.SyncTasks.SyncBooksTask do
     url = get_author_roles_url(json)
 
     with {:ok, json} <- FetchJson.get(url),
-         {:ok, roles} <- BidsTransformer.from_json(json) do
+         {:ok, roles} <- AuthorRolesTransformer.from_json(json) do
       {:ok, roles}
     else
       {:error, reason} ->