[jira] [Created] (FLINK-17686) Add document to dataGen, print, blackhole connectors

[Shang Yuanchun (Jira)]

Jingsong Lee created FLINK-17686:
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             Summary: Add document to dataGen, print, blackhole connectors
                 Key: FLINK-17686
                 URL: https://issues.apache.org/jira/browse/FLINK-17686
             Project: Flink
          Issue Type: Sub-task
          Components: Documentation
            Reporter: Jingsong Lee
             Fix For: 1.11.0






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