Update link to Python book information.

Doc/tools/getpagecounts

@@ -65,7 +65,7 @@ to print this, *please* print two-sided if you have a printer capable
 of it!  To locate published copies of the larger manuals, or other
 Python reference material, consult the Python Bookstore at:
 
-             http://www.amk.ca/bookstore/
+    http://www.python.org/cgi-bin/moinmoin/PythonBooks
 
 The following manuals are included in this package:
 """