Fixed to the canonical link

Author: egonw

sitemap.xml

@@ -2,7 +2,7 @@
         xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
         xsi:schemaLocation="http://www.sitemaps.org/schemas/sitemap/0.9 http://www.sitemaps.org/schemas/sitemap/0.9/sitemap.xsd">
   <url>
-    <loc>https://egonw.github.com/cdkbook/index.html</loc>
+    <loc>https://egonw.github.io/cdkbook/</loc>
     <priority>1.00</priority>
     <changefreq>weekly</changefreq>
   </url>