Replace sitemap iframe with hyperlink

package.json

@@ -1,6 +1,6 @@
 {
     "name": "tools",
-    "version": "1.1.4",
+    "version": "1.1.5",
     "description": "Main page for the /tools directory.",
     "author": "Felix W. Dekker",
     "browser": "dist/bundle.js",

src/main/index.html

@@ -26,10 +26,8 @@
         Please check the <a href="https://www.enable-javascript.com/">
         instructions on how to enable JavaScript in your web browser</a>.
     </p>
-
     <p>
-        Alternatively, consider this hard-to-read site map.<br />
-        <iframe src="https://fwdekker.com/api/nav/" width="800px" height="400px">Failed to load the site map.</iframe>
+        Alternatively, check out the <a href="https://fwdekker.com/api/nav/">JSON site map</a>.
     </p>
 </noscript>
 <main class="hidden">