Switch from <section> to <footer>

Sections should have headings, while this is actually a footer.

themes/etch-custom/layouts/_default/single.html

@@ -10,7 +10,7 @@
 </article>
 <br>
 <hr>
-<section class="comment">
+<footer class="comment">
 	{{ with .OutputFormats.Get "gemtext" }}
 	<p>
 	View this article on <a href="{{replace .Permalink "/gemini" "" 1 | safeURL}}">my Gemini capsule</a>
@@ -19,7 +19,7 @@
 	<p>
 	<a href="mailto:~seirdy/seirdy.one-comments@lists.sr.ht">Send an email</a> to leave a comment in the <a href="https://lists.sr.ht/~seirdy/seirdy.one-comments">mailing list</a> for seirdy.one. You'll have to send in plain text; please <a href="https://useplaintext.email/">learn how.</a>. Alternatively, send your email <a href="mailto:seirdy@seirdy.one">directly to me</a>; it won’t show up on the mailing list, but I’ll see it.
 	</p>
-</section>
+</footer>
 <hr>
 
 {{ end }}