[FLINK-35271] Add doc for syntax `describe job 'xxx'`

• Type: Sub-task
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 1.20.0
• Fix Version/s: 1.20.0
• Component/s: Table SQL / API
• Labels: pull-request-available
• Assignee: xuyang
• Reporter: xuyang
• Created: 30/Apr/24 01:24
• Updated: 02/Jul/24 16:59
• Resolved: 27/Jun/24 02:19

Issue Links

• relates to: FLINK-35194 Support describe job syntax and execution
• links to: GitHub Pull Request #24984
• links to: https://github.com/apache/flink/pull/24984