fix: support footnotes on dynamic pages

workers/dynamic-pages/utils/formatters.js

@@ -1,4 +1,6 @@
 import markdownIt from "markdown-it";
+import markdownItAnchor from "markdown-it-anchor";
+import markdownItFootnote from "markdown-it-footnote";
 
 export const formatDate = (date) =>
   new Date(date).toLocaleDateString("en-US", {
@@ -6,4 +8,13 @@ export const formatDate = (date) =>
     month: "long",
     day: "numeric",
   });
+
 export const md = markdownIt({ html: true, linkify: true });
+
+md.use(markdownItAnchor, {
+  level: [1, 2],
+  permalink: markdownItAnchor.permalink.headerLink({
+    safariReaderFix: true,
+  }),
+});
+md.use(markdownItFootnote);