ajoute site map image

<?xml version="1.0" encoding="UTF-8"?>
 <urlset xmlns="http://www.sitemaps.org/schemas/sitemap/0.9"
  xmlns:image="http://www.google.com/schemas/sitemap-image/1.1">
 <url>
   <loc>http://example.com/sample.html</loc>
   <image:image>
     <image:loc>http://example.com/image.jpg</image:loc>
   </image:image>
   <image:image>
     <image:loc>http://example.com/photo.jpg</image:loc>
   </image:image>
 </url> 
</urlset>