Fix sample macro

git-svn-id: https://origsvn.digium.com/svn/asterisk/trunk@3790 65c4cc65-6c06-0410-ace0-fbb531ad65f3

configs/extensions.conf.sample

@@ -192,7 +192,7 @@ exten => s-NOANSWER,2,Goto(default,s,1)			; If they press #, return to start
 exten => s-BUSY,1,Voicemail(b${ARG1})			; If busy, send to voicemail w/ busy announce
 exten => s-BUSY,2,Goto(default,s,1)				; If they press #, return to start
 
-exten => s-.,1,Goto(s-NOANSWER,1)				; Treat anything else as no answer
+exten => _s-.,1,Goto(s-NOANSWER,1)				; Treat anything else as no answer
 
 exten => a,1,VoicemailMain(${ARG1})				; If they press *, send the user into VoicemailMain