Add favicons to guides that lacked them

angularjs-google-style.html

@@ -4,6 +4,7 @@
 <head>
     <META http-equiv="Content-Type" content="text/html; charset=iso-8859-1">
     <base target="_blank">
+    <link href="https://www.google.com/favicon.ico" type="image/x-icon" rel="shortcut icon">
     <link rel="stylesheet" type="text/css" href="styleguide.css">
     <script src="https://google-code-prettify.googlecode.com/svn/loader/run_prettify.js"></script>
     <script language="javascript" src="/eng/doc/devguide/include/styleguide.js"></script>

xmlstyle.html

@@ -1,3 +1,4 @@
+<link href="https://www.google.com/favicon.ico" type="image/x-icon" rel="shortcut icon">
 <style type="text/css">
 /* default css */
 table {