improves docs for callback

Author: PedroAugustoRamalhoDuarte

docs/features/callbacks.md

@@ -1,13 +1,18 @@
 # Callbacks
 
 You can use the callbacks in the controller to add some logic before, around or after `set_resource`
-or `set_parent_resource`:
+, `set_parent_resource` or `set_all_resources`:
+
+- The `set_resource` method is called in [:show, :update, :destroy] actions
+- The `set_parent_resource` method is called in all actions if you are using nested resources
+- The `set_all_resources` method is called in [:index] actions
 
 ```ruby
 # frozen_string_literal: true
 
 class CarsController < RestApiGenerator::ResourceController
   after_set_resource :authorize_logic
+  set_all_resources -> { @resources = authorized_resource(@resources) }
 
   def authorize_logic
     # Custom authorization logic