2013/advconc: fix slide (/STARTNAIVE/ matched STARTNAIVEMERGE).

Change-Id: Ic45435c28ace549740842ab68efc31e9e9a5061a
Reviewed-on: https://go-review.googlesource.com/2274
Reviewed-by: Alan Donovan <adonovan@google.com>
diff --git a/2013/advconc.slide b/2013/advconc.slide
index af61ce5..cb7d127 100644
--- a/2013/advconc.slide
+++ b/2013/advconc.slide
@@ -179,7 +179,7 @@
 
 * Bug 2: time.Sleep may keep loop running
 
-.code advconc/naivemain/naivemain.go /STARTNAIVE/,/STOPNAIVE/ HLsleep
+.code advconc/naivemain/naivemain.go /STARTNAIVE /,/STOPNAIVE / HLsleep
 
 * Bug 3: loop may block forever on s.updates