Add 'jid' as a possible sort order to the help screen.

PR:		bin/150992
Submitted by:	Frederic Culot <frederic at culot dot org>
Approved by:	avg (mentor)
MFC after:	5 days

contrib/top/commands.c

@@ -80,10 +80,12 @@ n or #  - change number of processes to display\n", stdout);
 #ifdef ORDER
 	if (displaymode == DISP_CPU)
 		fputs("\
-o       - specify sort order (pri, size, res, cpu, time, threads)\n", stdout);
+o       - specify sort order (pri, size, res, cpu, time, threads, jid)\n",
+	    stdout);
 	else
 		fputs("\
-o       - specify sort order (vcsw, ivcsw, read, write, fault, total)\n", stdout);
+o       - specify sort order (vcsw, ivcsw, read, write, fault, total, jid)\n",
+	    stdout);
 #endif
 	fputs("\
 r       - renice a process\n\