[hotfix] [FLINK-28341] [streaming-java] Change the MIN and MAX value for Byte data type

[ravening]

The MIN value should be -128 and max value is 127

What is the purpose of the change

Change the Byte min and max values in the description

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)

[flinkbot]

CI report:

• 7dd394348b817468a5f58bdde3c8b93b4c628022 Azure: FAILURE

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