[#3840] update alarm document.
[#3840] update alarm document.

jaehong-kim/pinpoint,koo-taejin/pinpoint,emeroad/pinpoint,koo-taejin/pinpoint,minwoo-jung/pinpoint,emeroad/pinpoint,naver/pinpoint,minwoo-jung/pinpoint,minwoo-jung/pinpoint,jaehong-kim/pinpoint,koo-taejin/pinpoint,jaehong-kim/pinpoint,minwoo-jung/pinpoint,koo-taejin/pinpoint,emeroad/pinpoint,naver/pinpoint,emeroad/pinpoint,jaehong-kim/pinpoint,naver/pinpoint,emeroad/pinpoint,minwoo-jung/pinpoint,koo-taejin/pinpoint,jaehong-kim/pinpoint,naver/pinpoint,emeroad/pinpoint,minwoo-jung/pinpoint,koo-taejin/pinpoint,naver/pinpoint,jaehong-kim/pinpoint