Spell Duncan's name correctly

git-svn-id: https://svn.apache.org/repos/asf/ant/core/trunk@269032 13f79535-47bb-0310-9956-ffa450edef68

docs/manual/credits.html

@@ -17,7 +17,7 @@
   <li>Jacques Bergeron (<a href="mailto:jacques.bergeron@dogico.com">jacques.bergeron@dogico.com</a>)</li>
   <li>Stefan Bodewig (<a href="mailto:stefan.bodewig@epost.de">stefan.bodewig@epost.de</a>)</li>
   <li>Patrick Chanezon (<a href="mailto:chanezon@netscape.com">chanezon@netscape.com</a>)</li>
-  <li>James Duncan Davison (<a href="mailto:duncan@x180.com">duncan@x180.com</a>)</li>
+  <li>James Duncan Davidson (<a href="mailto:duncan@x180.com">duncan@x180.com</a>)</li>
   <li>Tom Dimock (<a href="mailto:tad1@cornell.edu">tad1@cornell.edu</a>)</li>
   <li>Peter Donald (<a href="mailto:donaldp@apache.org">donaldp@apache.org</a>)</li>
   <li>Diane Holt (<a href="mailto:holtdl@yahoo.com">holtdl@yahoo.com</a>)</li>