Merge pull request #1003 from dust6174/develop

[RIP-9]Delete the Introduction and underlines

docs/en/Operations_Trace.md

 # Message Trace
 
-This document focuses on how to quickly deploy and use RocketMQ clusters that support message trace features
-
 ## 1 Key Attributes of Message Trace Data
 
 | Producer        | Consumer        | Broker     |