Bluetooth: shell: Fix disconnect command argument count

Fix disconnect command optional argument count to permit the
supply of Bluetooth Address so as to be able to cancel a
pending central initiated connection creation.

Signed-off-by: Vinayak Kariappa Chettimada <[email protected]>

Author: cvinayak

subsys/bluetooth/shell/bt.c

@@ -1326,7 +1326,7 @@ SHELL_STATIC_SUBCMD_SET_CREATE(bt_cmds,
 	SHELL_CMD_ARG(connect, NULL, HELP_ADDR_LE, cmd_connect_le, 3, 0),
 	SHELL_CMD_ARG(auto-conn, NULL, HELP_ADDR_LE, cmd_auto_conn, 3, 0),
 #endif /* CONFIG_BT_CENTRAL */
-	SHELL_CMD_ARG(disconnect, NULL, HELP_NONE, cmd_disconnect, 1, 0),
+	SHELL_CMD_ARG(disconnect, NULL, HELP_NONE, cmd_disconnect, 1, 2),
 	SHELL_CMD_ARG(select, NULL, HELP_ADDR_LE, cmd_select, 3, 0),
 	SHELL_CMD_ARG(conn-update, NULL, "<min> <max> <latency> <timeout>",
 		      cmd_conn_update, 5, 0),