Document linkable author byline on Become a writer page

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

scripts/lib/renderers.mjs

@@ -299,7 +299,7 @@ ${nav}
         <li>Write your article in a <strong>.md (Markdown)</strong> file.</li>
         <li>Email it to <a href="mailto:planetrenox@pm.me">planetrenox@pm.me</a>.</li>
         <li>If approved, your story will be published on apophenia.news.</li>
-        <li>Your byline can use your real name or an alias.</li>
+        <li>Your byline can use your real name or an alias, and can link to your site or profile: <code>author: "[Your Name](https://your-site.com)"</code> (keep the quotes).</li>
       </ul>
 
       <h2>Frontmatter template (optional)</h2>
@@ -307,7 +307,7 @@ ${nav}
 title: "Your headline"
 slug: your-slug
 date: 2026-03-01
-author: Your Name or Alias
+author: "[Your Name or Alias](https://your-site.com)" # link optional
 description: "1-2 sentence summary"
 header_image: https://direct-img.link/your+image+query
 tags: