add missing closing quote.
diff --git a/Doc/lib/libcodeop.tex b/Doc/lib/libcodeop.tex
index 4267d38..ac39d2a 100644
--- a/Doc/lib/libcodeop.tex
+++ b/Doc/lib/libcodeop.tex
@@ -19,7 +19,7 @@
\begin{enumerate}
\item Being able to tell if a line of input completes a Python
statement: in short, telling whether to print
- `\code{>\code{>}>~} or `\code{...~}' next.
+ `\code{>\code{>}>~}' or `\code{...~}' next.
\item Remembering which future statements the user has entered, so
subsequent input can be compiled with these in effect.
\end{enumerate}