Fix an example
diff --git a/Doc/whatsnew/whatsnew23.tex b/Doc/whatsnew/whatsnew23.tex
index a0ad893..2133060 100644
--- a/Doc/whatsnew/whatsnew23.tex
+++ b/Doc/whatsnew/whatsnew23.tex
@@ -79,7 +79,6 @@
>>> S1 & S2 # Alternative notation
Set([])
>>> S1.union_update(S2)
-Set([1, 2, 3, 4, 5, 6])
>>> S1
Set([1, 2, 3, 4, 5, 6])
>>>
@@ -2015,7 +2014,7 @@
The author would like to thank the following people for offering
suggestions, corrections and assistance with various drafts of this
article: Simon Brunning, Michael Chermside, Scott David Daniels,
-Fred~L. Drake, Jr., Raymond Hettinger, Michael Hudson, Detlef Lannert,
+Fred~L. Drake, Jr., Kelly Gerber, Raymond Hettinger, Michael Hudson, Detlef Lannert,
Martin von L\"owis, Andrew MacIntyre, Lalo Martins, Gustavo Niemeyer,
Neal Norwitz, Chris Reedy, Vinay Sajip, Neil Schemenauer, Jason
Tishler.