NSH library: Fix build break in nsh_command.c with IPv4/IPv6 dual stack.
@@ -474,7 +474,7 @@ static const struct cmdmap_s g_cmdmap[] =
#if defined(CONFIG_NSH_TELNET) && !defined(CONFIG_NSH_DISABLE_TELNETD)
#if defined(CONFIG_NET_IPv4) && defined(CONFIG_NET_IPv6)
- {"telnetd", cmd_telnetd, 2, 2, [ipv4|ipv6] },
+ {"telnetd", cmd_telnetd, 2, 2, "[ipv4|ipv6]" },
#else
{"telnetd", cmd_telnetd, 1, 1, NULL },
#endif
