Use nested <details> for webrings

layouts/partials/webrings.html

@@ -8,6 +8,8 @@
 <h2 id="webrings">Webrings</h2>
 {{ $webringData := after 1 (getCSV "," "/csv/webrings.csv") -}}
 <p>This site is part of {{ len $webringData }} <a href="https://en.wikipedia.org/wiki/Webring">webrings</a>. A webring is a collection of sites in a circular doubly-linked list; each website links to the next and previous site in the list.</p>
+<details>
+	<summary>Toggle webrings list</summary>
 	<ol>
 	{{- range $i, $r := $webringData }}
 		{{- $webringName := index $r 0 }}
@@ -29,4 +31,5 @@
 		</li>
 	{{- end -}}
 	</ol>
+</details>
 <p>If you&rsquo;re part of a webring and would like me to join, just ask. I&rsquo;ll probably accept if joining only requires me to add hyperlinks to this page (no scripts, external content, or images), and if the ring doesn&rsquo;t seem to promote anything I find objectionable.</p>