Another app documentation tweak.

git-svn-id: https://origsvn.digium.com/svn/asterisk/trunk@7604 65c4cc65-6c06-0410-ace0-fbb531ad65f3

apps/app_waitforsilence.c

@@ -56,7 +56,7 @@ static char *descrip =
 "SILENCE - if silence of x ms was detected"
 "TIMEOUT - if silence of x ms was not detected."
 "Examples:\n"
-"  - WaitForSilence(500,2) will wait for 1/2 second of silence, twice\n"
+"  - WaitForSilence(500|2) will wait for 1/2 second of silence, twice\n"
 "  - WaitForSilence(1000) will wait for 1 second of silence, once\n";
 
 STANDARD_LOCAL_USER;