add square brackets in 8.3, issue #188

Author: jsiek

book.tex

@@ -15734,7 +15734,7 @@ \section{Shrink \LangFun{}}
 \end{lstlisting}
 where $\itm{mainDef}$ is
 \begin{lstlisting}
-FunctionDef('main', [], |$\Stmt\ldots$|Return(Constant(0)), None, IntType(), None)
+FunctionDef('main', [], [|$\Stmt\ldots$|Return(Constant(0))], None, IntType(), None)
 \end{lstlisting}
 \fi}