Update URL for Python 2.0

Doc/whatsnew/whatsnew20.tex

@@ -17,7 +17,7 @@ the beta cycle before the final release of Python 2.0.
 
 A new release of Python, version 2.0, will be released some time this
 summer.  Beta versions are already available from
-\url{http://www.pythonlabs.com/tech/python2.html}.  This article
+\url{http://www.pythonlabs.com/products/python2.0/}.  This article
 covers the exciting new features in 2.0, highlights some other useful
 changes, and points out a few incompatible changes that may require
 rewriting code.