[jira] [Created] (FLINK-20543) Fix typo in upsert kafka docs

[xiaozilong (Jira)]

xiaozilong created FLINK-20543:
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             Summary: Fix typo in upsert kafka docs
                 Key: FLINK-20543
                 URL: https://issues.apache.org/jira/browse/FLINK-20543
             Project: Flink
          Issue Type: Bug
          Components: Documentation
    Affects Versions: 1.12.0
            Reporter: xiaozilong






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