Observability task: improve the document of log configuration

[conghuhu]

• [x] I have searched the issues of this repository and believe that this is not a duplicate.

Describe the proposal

中文： 在Dubbo website中完善日志相关文档，包含如何优雅的日志打印比如分层打印框架日志，性能日志等

en: Improve log related documents on the Dubbo website, including how to print logs gracefully, such as hierarchical printing framework logs, performance logs, etc.

[conghuhu]

reference doc

[ethic-233]

assign to me thanks

[GoIruri]

assign to me，thanks

[conghuhu]

Add my DingDing: 15841721425. @GoIruri @ethic-233