adjust html

Author: yama-dev

examples/index.html

@@ -155,8 +155,6 @@ <h3>Advanced Use (Acceleration)</h3>
       &lt;/script&gt;</code>
     </pre>
 
-    <p><a class="btn btn btn-secondary" href="./acceleration.html">デモページへ</a></p>
-
   </div>
 
   <hr class="mt-4 mb-4 js-scroll js-scroll__fadein-bottom">