add node logging documentation.

[GrothenDI]

Summary

• add the Chinese translation of the node logging guide
• document application logs, JVM garbage-collection logs, Logback routing, Prometheus metric behavior, and troubleshooting configuration
• update the Chinese logging FAQ and add the guide to the site navigation

Why

The Chinese documentation is the translated counterpart of the English documentation. This change keeps the node logging guidance aligned across both repositories and replaces outdated FAQ instructions.

Impact

Chinese-speaking node operators receive the same logging guidance as readers of the English documentation, with configuration names and Logback terminology preserved for direct comparison with logback.xml.

Validation

• mkdocs build --strict
• git diff --check
• translation reviewed against the English source and local java-tron implementation

[vivian1912]

“The current reference file is ...” may be misleading because the link points to the moving master branch rather than a specific “current version.” Could we clarify the branch and version selection while preserving the surrounding context? Suggested wording:

“Start with the logback.xml that matches the running java-tron version. The [logback.xml](https://github.com/tronprotocol/java-tron/blob/master/framework/src/main/resources/logback.xml) linked here is from the master branch; to view the file for a released version, select the corresponding release tag.”