Fixing Ant book link.

git-svn-id: https://svn.apache.org/repos/asf/ant/core/trunk@277840 13f79535-47bb-0310-9956-ffa450edef68

docs/contributors.html

@@ -204,7 +204,7 @@ Gump PMC.
                                 <p>
                 <b>Erik Hatcher</b> (ehatcher at apache.org)
 <br />
-Erik is the co-author of <a href="http://www.manning.com/antbook">
+Erik is the co-author of <a href="http://www.manning.com/hatcher">
 Java Development with Ant</a> and speaks on Ant and other topics at
 <a href="http://www.nofluffjuststuff.com">No Fluff, Just Stuff
 symposiums</a> as well as other venues.  Erik is the President of

xdocs/contributors.xml

@@ -55,7 +55,7 @@ Gump PMC.
             <p>
                 <b>Erik Hatcher</b> (ehatcher at apache.org)
 <br/>
-Erik is the co-author of <a href="http://www.manning.com/antbook">
+Erik is the co-author of <a href="http://www.manning.com/hatcher">
 Java Development with Ant</a> and speaks on Ant and other topics at
 <a href="http://www.nofluffjuststuff.com">No Fluff, Just Stuff
 symposiums</a> as well as other venues.  Erik is the President of