[jira] [Created] (BEAM-13489) [Playground] Update manifest.json and index.html to follow best practices

[Alexander Zhuravlev (Jira)]

Alexander Zhuravlev created BEAM-13489:
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             Summary: [Playground] Update manifest.json and index.html to 
follow best practices
                 Key: BEAM-13489
                 URL: https://issues.apache.org/jira/browse/BEAM-13489
             Project: Beam
          Issue Type: Sub-task
          Components: beam-playground
            Reporter: Alexander Zhuravlev






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