Use the shorter form of Christopher Petrilli's email address.
diff --git a/Doc/html/about.dat b/Doc/html/about.dat
index 207cf6a..9d9a44a 100644
--- a/Doc/html/about.dat
+++ b/Doc/html/about.dat
@@ -22,5 +22,5 @@
       documentation has been heavily tailored by Fred L. Drake,
       Jr. (fdrake@acm.org).  Original navigation icons were
       contributed by Christopher Petrilli
-      (petrilli@dworkin.amber.org).
+      (petrilli@amber.org).
     </p>