[FLINK-31086] [DOC]update connector lable for blackhole and kafka

• Type: Improvement
• Status: Closed
• Priority: Minor
• Resolution: Fixed
• Component/s: Documentation
• Labels: pull-request-available
• Assignee: hehuiyuan
• Reporter: hehuiyuan
• Created: 15/Feb/23 09:44
• Updated: 15/Feb/23 14:16
• Resolved: 15/Feb/23 14:16

Description

pdate connector label for kafka and blackhole.

Blackhole: sink:bounded unbounded

Kafka: source bounded

Issue Links

• links to: GitHub Pull Request #21846