Fix broken link to 'Guide' (#148)

* Fix broken link to 'Guide'

* Update public/index.html

Co-authored-by: typicode <[email protected]>

Author: oneminch

public/index.html

@@ -248,7 +248,7 @@ <h2>Routes</h2>
 
       <p>
         <strong>Note</strong>: you can view detailed examples
-        <a href="guide.html">here</a>.
+        <a href="/guide/">here</a>.
       </p>
 
       <!-- JSON Server -->