[jira] [Created] (FLINK-14639) Fix the document of Metircs that has an error for `User Scope`

[Shang Yuanchun (Jira)]

hehuiyuan created FLINK-14639:
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             Summary: Fix the document of Metircs  that has an error for `User Scope`
                 Key: FLINK-14639
                 URL: https://issues.apache.org/jira/browse/FLINK-14639
             Project: Flink
          Issue Type: Wish
          Components: Documentation
         Environment: Hi , i think it should be `MetricGroup{{#addGroup(String key, String value)}}`
            Reporter: hehuiyuan
         Attachments: image-2019-11-07-10-42-37-862.png

!image-2019-11-07-10-42-37-862.png!



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