docs(cookbook): response is not declared on controller method (adonis…

…js#19)

content/cookbooks/validator/validating-server-rendered-forms.md

@@ -192,7 +192,7 @@ export default class PostsController {
  public async store({ request }: HttpContextContract) {
  // delete-end
  // insert-start
- public async store({ request, session }: HttpContextContract) {
+ public async store({ request, session, response }: HttpContextContract) {
  // insert-end
 
  // ... Collapsed existing code