Remove preview images

Relative URLs appear to be broken and would require adding a manual patch step using pagefind's facility for that

src/search/index.md

@@ -9,6 +9,6 @@ Search results generated by [Pagefind](https://pagefind.app/).
 <div id="search"></div>
 <script>
     window.addEventListener('DOMContentLoaded', (event) => {
-        new PagefindUI({ element: "#search", showSubResults: true });
+        new PagefindUI({ element: "#search", showSubResults: true, showImages: false });
     });
 </script>