form action upd

frontend/src/pages/webapps/scrollbar/markup.sxml

@@ -26,7 +26,7 @@
           ": The result will look different in different browsers, try checking the result in browsers based on different engines."))
 
      `(div (@ (class "scrollbar-app"))
-       (form (@ (method "GET") (action "/webapps/scrollbar.xhtml"))
+       (form (@ (method "GET") (action "/webapps/scrollbar.html"))
              (fieldset (@ (class "scrollbar-app__panel"))
                        (h3 "Bar:")
                        (div (@ (class "scrollbar-app__input"))