Allow adding a heading to the endnotes section

content/posts/password-strength.md

@@ -9,6 +9,7 @@ tags:
 - security
 - fun
 title: Becoming physically immune to brute-force attacks
+footnote_heading: References and endnotes
 ---
 
 This is a tale of the intersection between thermal physics, cosmology, and a tiny

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

@@ -12,7 +12,7 @@
 			{{ end }}
 		</header>
 		<section class="e-content" itemprop="articlebody">
-			{{ .Content -}}
+			{{ partial "processed-content" . -}}
 		</section>
 	</article>
 	<br>

themes/etch-custom/layouts/partials/processed-content.html

@@ -0,0 +1,7 @@
+{{ if .Params.footnote_heading -}}
+{{ $references    := `(<section class="footnotes" role="doc-endnotes")` -}}
+	{{ $heading :=  .Params.footnote_heading -}}
+	{{ $referencesWithHeading := printf `${1} aria-labeledby="note-hd">
+<h2 id="note-hd">%s</h2` ($heading) -}}
+	{{ .Content | replaceRE $references $referencesWithHeading | safeHTML -}}
+{{ end -}}