fix: Clean up small things

- Rename footer macro
- Remove unnecessary div in components page
- Rename file comments

source/screens/demo/components.njk

@@ -15,7 +15,6 @@ tags:
 
 {% block main %}
 	<!-- {{ page.fileSlug }}.page -->
-	<div id="begin" class="">
 		<section class="sec_main_center">
 			<header class="header_txt">
 				<h1>Medienformat Abfragen</h1>
@@ -210,7 +209,6 @@ tags:
 				</select>
 			</article>
 		</section>
-	</div>
 {% endblock %}
 
 {% block script %}