📚 Update example link in index.html to point to local documentation

Author: httpdss

site/index.html

@@ -455,7 +455,7 @@ <h3 class="card-title">
             </p>
           </div>
           <div class="card-footer">
-            <a href="https://github.com/httpdss/struct/tree/main/example" class="btn btn-ghost" target="_blank">
+            <a href="/struct/docs/examples/index.html" class="btn btn-ghost" target="_blank">
               Browse Examples →
             </a>
           </div>