[PATCH 2/2] appendix/questions/after: Use \co{}

Some code snippets in after.tex are not enclosed with \co{}.  Enclose
those.

Signed-off-by: SeongJae Park <[email protected]>
---
 appendix/questions/after.tex | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/appendix/questions/after.tex b/appendix/questions/after.tex
index d6b0dfdf..768888ed 100644
--- a/appendix/questions/after.tex
+++ b/appendix/questions/after.tex
@@ -45,7 +45,7 @@ e.g., where time has appeared to go backwards.
 	Here are errors you might have found:
 
 	\begin{enumerate}
-	\item	Missing barrier() or volatile on tight loops.
+	\item	Missing \co{barrier()} or \co{volatile} on tight loops.
 	\item	Missing memory barriers on update side.
 	\item	Lack of synchronization between producer and consumer.
 	\end{enumerate}
-- 
2.17.1