[FLINK-27319] Duplicated '-t' option for savepoint format and deployment target

[dawidwys]

Verifying this change

Run:

../flink-1.15.0/bin/flink savepoint --type canonical <job_id> savepoints

check it runs correctly

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

• Dependencies (does it add or upgrade a dependency): (yes / no)
• The public API, i.e., is any changed class annotated with @Public(Evolving): (yes / no)
• The serializers: (yes / no / don't know)
• The runtime per-record code paths (performance sensitive): (yes / no / don't know)
• Anything that affects deployment or recovery: JobManager (and its components), Checkpointing, Kubernetes/Yarn, ZooKeeper: (yes / no / don't know)
• The S3 file system connector: (yes / no / don't know)

Documentation

• Does this pull request introduce a new feature? (yes / no)
• If yes, how is the feature documented? (not applicable / docs / JavaDocs / not documented) - the short option was undocumented

[flinkbot]

CI report:

• 2665d35 Azure: SUCCESS

Bot commands

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• @flinkbot run azure re-run the last Azure build

[joemoe]

LGTM