[jira] [Created] (FLINK-27926) Translate ```upgrading.md``` into chinese

[Zixuan Rao (Jira)]

Zixuan Rao created FLINK-27926:
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             Summary: Translate ```upgrading.md``` into chinese
                 Key: FLINK-27926
                 URL: https://issues.apache.org/jira/browse/FLINK-27926
             Project: Flink
          Issue Type: Improvement
          Components: chinese-translation
            Reporter: Zixuan Rao


A pull request is submitted as this issue is created. 



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