Update the API get actions to use the by_id action.

lib/decentralised_book_index/metadata.ex

@@ -6,7 +6,7 @@ defmodule DecentralisedBookIndex.Metadata do
   json_api do
     routes do
       base_route "/books", Metadata.Book do
-        get :read
+        get :by_id
         index :search
 
         related :bids, :read, primary?: true
@@ -15,17 +15,17 @@ defmodule DecentralisedBookIndex.Metadata do
       end
 
       base_route "/authors", Metadata.Author do
-        get :read
+        get :by_id
         index :search
       end
 
       base_route "/publishers", Metadata.Publisher do
-        get :read
+        get :by_id
         index :search
       end
 
       base_route "/servers", Metadata.DBIServer do
-        get :read
+        get :by_id
         index :search
       end
     end