Update modal-message.html

update link to https

demos/dialog/modal-message.html

@@ -30,7 +30,7 @@
 	</p>
 </div>
 
-<p>Sed vel diam id libero <a href="http://example.com">rutrum convallis</a>. Donec aliquet leo vel magna. Phasellus rhoncus faucibus ante. Etiam bibendum, enim faucibus aliquet rhoncus, arcu felis ultricies neque, sit amet auctor elit eros a lectus.</p>
+<p>Sed vel diam id libero <a href="https://example.com">rutrum convallis</a>. Donec aliquet leo vel magna. Phasellus rhoncus faucibus ante. Etiam bibendum, enim faucibus aliquet rhoncus, arcu felis ultricies neque, sit amet auctor elit eros a lectus.</p>
 
 <div class="demo-description">
 <p>Use a modal dialog to explicitly acknowledge information or an action before continuing their work.  Set the <code>modal</code> option to true, and specify a primary action (Ok) with the <code>buttons</code> option.</p>