Add embedded schema for Artikel

lib/outlook_web/components/public_components.ex

@@ -23,14 +23,14 @@ defmodule OutlookWeb.PublicComponents do
   end
 
   attr :artikel, :any, required: true
-  attr :show_author, :boolean, default: true
+  attr :show_autor, :boolean, default: true
 
   def artikel(assigns) do
     ~H"""
     <.link navigate={~p"/artikel/#{@artikel}"}>
       <div class="my-2 px-2 rounded border-2 border-solid border-gray-300 dark:border-stone-800">
         <h4 class="font-bold  text-stone-800 dark:text-stone-300 py-2"><%= @artikel.title %></h4>
-        <div :if={@show_author}><small><%= @artikel.article.author.name %></small></div>
+        <div :if={@show_autor}><small><%= @artikel.autor_name %></small></div>
         <div><small><%= @artikel.date |> Calendar.strftime("%d.%m.%Y") %></small></div>
         <div><%= @artikel.teaser |> tidy_raw %></div>
       </div>