fix: typo

Author: bendersej

index.html

@@ -92,7 +92,7 @@ <h2>Fill & Sign PDF with a <u>single</u> line of code</h2>
       </ul>
     </div>
     <h3 class="interactive-demo-title">Interactive demo<button id="button" onclick="sendMessage()">Try with a fillable form</button></h3>
-    <p class="google-sheet-disclaimer">The submitted document can be seen <a href="https://webhooks.simplepdf.co/" target="_blank">on this website</a></p>
+    <p class="google-sheet-disclaimer">The submitted document can be seen <a href="https://webhooks.simplepdf.com/" target="_blank">on this website</a></p>
 
     <div class="iframe-wrapper">
       <iframe