Update chan_spy documentation.

Update the documentation in ChanSpy and ExtenSpy to reflect that only a
single group can be specified to the g() option.

(closes issue #16420)
Reported by: diatonic

git-svn-id: https://origsvn.digium.com/svn/asterisk/branches/1.4@234094 65c4cc65-6c06-0410-ace0-fbb531ad65f3

apps/app_chanspy.c

@@ -77,7 +77,7 @@ static const char *desc_chan =
 "  Options:\n"
 "    b             - Only spy on channels involved in a bridged call.\n"
 "    g(grp)        - Match only channels where their ${SPYGROUP} variable is set to\n"
-"                    contain 'grp' in an optional : delimited list.\n"
+"                    contain 'grp'.\n"
 "    q             - Don't play a beep when beginning to spy on a channel, or speak the\n"
 "                    selected channel name.\n"
 "    r[(basename)] - Record the session to the monitor spool directory. An\n"
@@ -105,7 +105,7 @@ static const char *desc_ext =
 "  Options:\n"
 "    b             - Only spy on channels involved in a bridged call.\n"
 "    g(grp)        - Match only channels where their ${SPYGROUP} variable is set to\n"
-"                    contain 'grp' in an optional : delimited list.\n"
+"                    contain 'grp'.\n"
 "    q             - Don't play a beep when beginning to spy on a channel, or speak the\n"
 "                    selected channel name.\n"
 "    r[(basename)] - Record the session to the monitor spool directory. An\n"