fix any-vector-ref cast insertion for racket

book.tex

@@ -26,7 +26,7 @@
 
 \def\racketEd{0}
 \def\pythonEd{1}
-\def\edition{1}
+\def\edition{0}
 
 % material that is specific to the Racket edition of the book
 \newcommand{\racket}[1]{{\if\edition\racketEd{#1}\fi}}
@@ -17601,7 +17601,7 @@ $\Rightarrow$
 &
 \begin{minipage}{0.65\textwidth}
 \begin{lstlisting}
-(any-vector-ref |$e_1'$| |$e_2'$|)
+(any-vector-ref |$e_1'$| (project |$e'_2$| Integer))
 \end{lstlisting}
 \end{minipage}
 \\[2ex]\hline