Refactor the metadata domain format.

lib/decentralised_book_index/metadata.ex

@@ -6,8 +6,14 @@ defmodule DecentralisedBookIndex.Metadata do
     resource DecentralisedBookIndex.Metadata.Book
 
     resource DecentralisedBookIndex.Metadata.Author do
-      define :create_author, action: :create, args: [:name, :description, {:optional, :author_alias_registry_id}]
-      define :add_author_to_related_alias_registry, action: :add_author_to_related_alias_registry, args: [:name, :description, :related_author_id]
+      define :create_author,
+        action: :create,
+        args: [:name, :description, {:optional, :author_alias_registry_id}]
+
+      define :add_author_to_related_alias_registry,
+        action: :add_author_to_related_alias_registry,
+        args: [:name, :description, :related_author_id]
+
       define :list_authors, action: :read
       define :get_author_by_id, args: [:id], action: :by_id
       define :get_author_alternative_names, args: [:author], action: :get_alternative_names