doc improvement.

git-svn-id: https://hudson.dev.java.net/svn/hudson/trunk/hudson/main@30035 71c3de6d-444a-0410-be80-ed276b4c234a

test/src/main/java/org/jvnet/hudson/test/HudsonTestCase.java

@@ -820,6 +820,8 @@ public abstract class HudsonTestCase extends TestCase implements RootAction {
 
     /**
      * Submits the form.
+     *
+     * Plain {@link HtmlForm#submit()} doesn't work correctly due to the use of YUI in Hudson.
      */
     public HtmlPage submit(HtmlForm form) throws Exception {
         return (HtmlPage)form.submit((HtmlButton)last(form.getHtmlElementsByTagName("button")));