Fix link transformer

Author: jdesrosiers

remark/rehype-link-transformer.js

@@ -1,14 +1,15 @@
-import { existsSync } from "fs";
+import { existsSync } from "node:fs";
+import { basename } from "node:path";
+import url from "node:url";
 import { visit } from "unist-util-visit";
-import url from "url";
 
 
 const rehypeLinkTransformer = () => (tree, vfile) => {
   visit(tree, "element", (node) => {
     if (node.tagName === "a") {
       const href = url.parse(node.properties.href);
       if (href.hostname === null && href.pathname?.endsWith(".md") && existsSync(vfile.history[0])) {
-        href.pathname = href.pathname.replace(/.md$/, ".html");
+        href.pathname = basename(href.pathname).replace(/.md$/, ".html");
         node.properties.href = url.format(href);
       }
     }