[FLINK-27163] Fix typo issue in Flink Metrics documentation

• Type: Technical Debt
• Status: Closed
• Priority: Minor
• Resolution: Fixed
• Affects Version/s: 1.15.0, 1.16.0
• Fix Version/s: 1.16.0
• Component/s: Documentation
• Labels: pull-request-available
• Assignee: hao wang
• Reporter: hao wang
• Created: 11/Apr/22 07:00
• Updated: 12/Aug/22 12:32
• Resolved: 20/Apr/22 12:05

Description

The Cluster module in the metrics documentation has five items，but only four are specified.

Issue Links

• links to: GitHub Pull Request #215
• links to: GitHub Pull Request #19420