try to fix favicon bug

www/code/index.html

@@ -3,7 +3,12 @@
 <head>
     <meta content="text/html; charset=utf-8" http-equiv="content-type"/>
     <script data-main="main" src="/bower_components/requirejs/require.js"></script>
-    <link rel="icon" type="image/png" href="/customize/favicon.png" data-alt-favicon="/customize/alt-favicon.png" id="favicon" />
+    <link rel="icon" type="image/png"
+        href="/customize/favicon.png"
+
+        data-main-favicon="/customize/favicon.png"
+        data-alt-favicon="/customize/alt-favicon.png"
+        id="favicon" />
     <style>
         #pad-iframe {
             position:fixed;