* add compliance export cancel command and tests
- Introduced `ComplianceExportCancelCmd` to allow cancellation of compliance export jobs.
- Implemented unit tests for the cancellation command, covering successful cancellation, error handling for non-existent jobs, and cancellation in non-cancellable states.
- Added end-to-end tests to validate the command's functionality in the E2E test suite.
* mmctl docs
* clean up example text; remove unneeded getJob
* fix tests
* fix tests, again.
* prefer hyphen for command naming
* update docs
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