The help on trace shows that -s is not implemented.
As it is implemented, change the help message not to say it
isn't.

Signed-off-by: Steven Rostedt <rostedt@goodmis.org>

Index: crash-5.1.3/extensions/trace.c
===================================================================
--- crash-5.1.3.orig/extensions/trace.c
+++ crash-5.1.3/extensions/trace.c
@@ -2969,7 +2969,7 @@ static char *help_ftrace[] = {
 "    by other tracing tools. The dirs and files are generated",
 "    the same as debugfs/tracing.",
 "    -m: also dump metadata of ftrace.",
-"    -s: also dump symbols of the kernel <not implemented>.",
+"    -s: also dump symbols of the kernel.",
 "trace dump -t [output-file-name]",
 "   dump ring_buffers and all meta data to a file that can",
 "   be parsed by trace-cmd. Default output file name is \"trace.dat\".",