Point to ASF download verification page

git-svn-id: https://svn.apache.org/repos/asf/creadur/rat/trunk@1632707 13f79535-47bb-0310-9956-ffa450edef68
diff --git a/src/site/xdoc/download_rat.xml.vm b/src/site/xdoc/download_rat.xml.vm
index d3c630b..4b2903a 100644
--- a/src/site/xdoc/download_rat.xml.vm
+++ b/src/site/xdoc/download_rat.xml.vm
@@ -24,7 +24,7 @@
       <subsection name="Using a Mirror">
         <p>
           We recommend you use a mirror to download our release
-          builds, but you <strong>must</strong> verify the integrity of
+          builds, but you <strong>must</strong> <a href="http://www.apache.org/info/verification.html">verify the integrity</a> of
           the downloaded files using signatures downloaded from our main
           distribution directories. Recent releases (48 hours) may not yet
           be available from the mirrors.