Take the page heading from the Markdown body, not a separate <h1>

Elternbeirat.Web/Features/Pages/ContentPage.razor

@@ -8,10 +8,7 @@
 else if (_page is not null)
 {
     <PageTitle>@_page.Title</PageTitle>
-    <article>
-        <h1>@_page.Title</h1>
-        @Body
-    </article>
+    <article>@Body</article>
     <PageEmbeds Embed="_page.Embed" />
 }
 @* No page and not unavailable: the slug was unknown; NavigationManager.NotFound()