demo: switch to bucket in dedicated AWS account

Signed-off-by: Benjamin Gilbert <[email protected]>

demo/index.html

@@ -66,7 +66,7 @@
 <script type="text/javascript">
 $(function() {
     var openseadragon_images = "https://cdn.jsdelivr.net/npm/[email protected]/build/openseadragon/images/"
-    var storage = "https://openslide-demo.s3.dualstack.us-east-1.amazonaws.com/"
+    var storage = "https://openslide-demo-site.s3.dualstack.us-east-2.amazonaws.com/"
 
     var stamp;
     var groups;