add link to asciidoc.org in footer

Author: mojavelinux

src/partials/footer-content.hbs

@@ -27,6 +27,6 @@
       <a href="https://algolia.com/docsearch" title="Search by Algolia DocSearch" target="_blank" rel="noopener"><img src="{{{uiRootPath}}}/img/algolia-logo.svg" alt="Algolia logo" width="30"></a>
       <a href="https://netlify.com" title="Deploys by Netlify" target="_blank" rel="noopener"><img src="{{{uiRootPath}}}/img/netlify-logo.svg" alt="Deploys by Netlify" width="67"></a>
     </p>
-    <p>Authored in AsciiDoc.<br>Produced by <a href="https://antora.org" target="_blank" rel="noopener">Antora</a> and <a href="https://asciidoctor.org" target="_blank" rel="noopener">Asciidoctor</a>.</p>
+    <p>Authored in <a href="https://asciidoc.org" target="_blank" rel="noopener">AsciiDoc</a>.<br>Produced by <a href="https://antora.org" target="_blank" rel="noopener">Antora</a> and <a href="https://asciidoctor.org" target="_blank" rel="noopener">Asciidoctor</a>.</p>
   </div>
 </footer>