Update docs

git-svn-id: https://svn.apache.org/repos/asf/felix/trunk@728307 13f79535-47bb-0310-9956-ffa450edef68
diff --git a/main/doc/apache-felix-usage-documentation_files/button.html b/main/doc/apache-felix-usage-documentation_files/button.html
index 6ff0533..dbd6daf 100644
--- a/main/doc/apache-felix-usage-documentation_files/button.html
+++ b/main/doc/apache-felix-usage-documentation_files/button.html
@@ -1,5 +1,5 @@
 <html><head>
 <meta http-equiv="content-type" content="text/html; charset=ISO-8859-1"><!-- ads start -->
-</head><body><a href="http://www.us.apachecon.com/" target="_blank"><img src="button_data/2008-usa-125x125.png" title="ApacheCon US 2008" border="0" height="125" width="125"></a>
+</head><body><a href="http://eu.apachecon.com/c/aceu2009/" target="_blank"><img src="button_data/2009-europe-125x125.png" title="ApacheCon Europe 2009" border="0" height="125" width="125"></a>
 <!-- ads end -->
 </body></html>
\ No newline at end of file