Make close brace a paren to match open.
diff --git a/Doc/ref/ref6.tex b/Doc/ref/ref6.tex
index f9ab90c..3dee67f 100644
--- a/Doc/ref/ref6.tex
+++ b/Doc/ref/ref6.tex
@@ -526,7 +526,7 @@
exception that was active in the current scope. If no exception is
active in the current scope, a \exception{TypeError} exception is
raised indicating that this is an error (if running under IDLE, a
-\exception{Queue.Empty} exception is raised instead}.
+\exception{Queue.Empty} exception is raised instead).
\index{exception}
\indexii{raising}{exception}