[FLINK-34119] Improve description about changelog in document

• Type: Improvement
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Fix Version/s: 1.19.0
• Component/s: Runtime / State Backends
• Labels: pull-request-available
• Assignee: Hangxiang Yu
• Reporter: Hangxiang Yu
• Created: 17/Jan/24 02:31
• Updated: 18/Jan/24 02:24
• Resolved: 18/Jan/24 02:24

Description

Since we have resolved some issues and marked as prodution-ready in release note,

we could update some description about it in doc.

Issue Links

• links to: GitHub Pull Request #24111