Update refs.html

Author: hoegertn

refs.html

@@ -93,7 +93,7 @@ <h3 class="muted">RestDoc</h3>
 		<h3>Below you find a list of pages and services using RestDoc</h3>
 
         <ul>
-	        <li><a href="https://www.tuwadest.com">Tullius Walden Bank</a></li>  
+	        <li><a href="https://api.tullius-walden.com/static/restdocp.html">Tullius Walden Bank</a></li>  
         </ul>
 
 		<p>If you use RestDoc and want to let others know, just <a href="contact.html">contact us</a> or write a pull request on <a href="https://github.com/RestDoc/restdoc.github.com">github</a></p>