[Improvement][doc] update time zone doc (#9503)

* update time zone doc

* update time zone doc

* update time zone doc

docs/docs/en/guide/howto/general-setting.md

@@ -14,9 +14,17 @@ of to [language](#language) control button.
 
 ## Time Zone
 
-DolphinScheduler support time zone setting. The build-in time zone is based on the server you run DolphinScheduler. You could
+DolphinScheduler support time zone setting. 
+
+Server Time Zone
+
+The default time zone is UTC when using `bin/dolphinshceduler_daemon.sh` to start the server, you could update `SPRING_JACKSON_TIME_ZONE` in `bin/env/dolphinscheduler_env.sh`, such as `export SPRING_JACKSON_TIME_ZONE=${SPRING_JACKSON_TIME_ZONE:-Asia/Shanghai}`.<br>
+If you start server in IDEA, the default time zone is your local time zone, you could add the JVM parameter to update server time zone, such as `-Duser.timezone=UTC`. Time zone list refer to [List of tz database time zones](https://en.wikipedia.org/wiki/List_of_tz_database_time_zones)
+
+User Time zone
+
+The user's default time zone is based on the time zone which you run the DolphinScheduler service.You could
 click the button on the right of the [language](#language) button and then click `Choose timeZone` to choose the time zone
 you want to switch. All time related components will adjust their time zone according to the time zone setting you select.
 
-DolphinScheduler uses UTC time for the internal communication, the time zone you choose only changes the display time format
-base on the UTC time. When you choose time zone `TIME ZONE`, we just convert the UTC time to the zone you prefer.
+

docs/docs/zh/guide/howto/general-setting.md

@@ -12,8 +12,14 @@ DolphinScheduler 支持两种类型的内置主题，包括 `Dark` 和 `Light`
 
 ## 时区
 
-DolphinScheduler 支持时区设置。默认时区基于您运行 DolphinScheduler 服务器的时区。如果你想要切换时区，可以点击 [语言](#语言) 按钮右侧的时区按钮，
-然后点击 `请选择时区` 进行时区选择。当切换完成后，所有与时间相关的组件都将更改。
+DolphinScheduler 支持时区设置。
+
+服务时区
+
+使用脚本 `bin/dolphinshceduler_daemon.sh`启动服务， 服务的默认时区为UTC， 可以在`bin/env/dolphinscheduler_env.sh`中进行修改， 如`export SPRING_JACKSON_TIME_ZONE=${SPRING_JACKSON_TIME_ZONE:-Asia/Shanghai}`。<br>
+IDEA 启动服务默认时区为本地时区，可以加jvm参数如`-Duser.timezone=UTC`来修改时区。 时区选择详见[List of tz database time zones](https://en.wikipedia.org/wiki/List_of_tz_database_time_zones)
 
-DolphinScheduler 内部通讯，以及任务主流程中使用 UTC 时间，在界面上显示的时间均是在 UTC 时间基础上进行时区格式化的，意味着当你切换了时区后，
-只是将格式化的时间从一个时区切换到另一个时区。
+用户时区
+
+用户的默认时区基于您运行 DolphinScheduler 服务的时区。如果你想要切换时区，可以点击 [语言](#语言) 按钮右侧的时区按钮，
+然后点击 `请选择时区` 进行时区选择。当切换完成后，所有与时间相关的组件都将更改。