Release 1.20 The spelling correction of the ogg format parameter in the json format part of the Chinese document

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What is the purpose of the change

This pull request corrects a spelling error in the JSON format part of the Chinese documentation. Specifically, it changes primary_keys to primary-keys.

Brief change log

• Corrected spelling from primary_keys to primary-keys in the JSON format part of the Chinese documentation.

Verifying this change

This change is a trivial rework / code cleanup without any test coverage.

Does this pull request potentially affect one of the following parts:

• Dependencies (does it add or upgrade a dependency): no
• The public API, i.e., is any changed class annotated with @Public(Evolving): no
• The serializers: no
• The runtime per-record code paths (performance sensitive): no
• Anything that affects deployment or recovery: JobManager (and its components), Checkpointing, Kubernetes/Yarn, ZooKeeper: no
• The S3 file system connector: no

Documentation

• Does this pull request introduce a new feature? no
• If yes, how is the feature documented? not applicable

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CI report:

• f1c292d Azure: SUCCESS

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