Fixed outdated try.freemarker link.
diff --git a/src/manual/en_US/book.xml b/src/manual/en_US/book.xml
index 8569625..1af1148 100644
--- a/src/manual/en_US/book.xml
+++ b/src/manual/en_US/book.xml
@@ -417,8 +417,8 @@
and "directive" synonyms.)</para>
<note>
- <para>You can easily try writing templates on <link
- xlink:href="http://freemarker-online.kenshoo.com/">http://freemarker-online.kenshoo.com/</link></para>
+ <para>You can easily try writing templates on <olink
+ targetdoc="onlineTemplateTester"/></para>
</note>
<section>