Remove .html from internal links

src/components/TwoColumnPage.astro

@@ -1,7 +1,9 @@
 ---
 import SiteSidebar from "./SiteSidebar.astro";
+import { normalizeInternalHtmlLinks } from "../lib/urls";
 
 const { articleHtml } = Astro.props;
+const normalizedArticleHtml = normalizeInternalHtmlLinks(articleHtml);
 ---
 
 <div id="main">
@@ -10,7 +12,7 @@ const { articleHtml } = Astro.props;
 
     <section id="container" class="two-columns-right">
       <div id="content" role="main">
-        <Fragment set:html={articleHtml} />
+        <Fragment set:html={normalizedArticleHtml} />
       </div>
       <SiteSidebar />
     </section>