fix issue #186

book.tex

@@ -17919,7 +17919,7 @@ $\Rightarrow\qquad$
 \begin{minipage}{0.5\textwidth}
 {\if\edition\racketEd
 \begin{lstlisting}
-(Closure |$n$| (FunRef |$f$| |$n$|) '())
+(Closure |$n$| (list (FunRef |$f$| |$n$|)))
 \end{lstlisting}
 \fi}
 {\if\edition\pythonEd\pythonColor