added one sentence re facility in cfg-logging.rst
added one sentence re facility in cfg-logging.rst

ocelot-inc/tarantool,mejedi/tarantool,mejedi/tarantool,mejedi/tarantool,ocelot-inc/tarantool,rtsisyk/tarantool,ocelot-inc/tarantool,mejedi/tarantool,rtsisyk/tarantool,rtsisyk/tarantool,rtsisyk/tarantool,ocelot-inc/tarantool