update autoaugment to python3.x

[moneypi]

Description

:memo: Please include a summary of the change.

update autoaugment to python3.x

Type of change

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Note: Please delete options that are not relevant.

• [ ] Bug fix (non-breaking change which fixes an issue)
• [x] Documentation update
• [ ] TensorFlow 2 migration
• [ ] New feature (non-breaking change which adds functionality)
• [ ] Breaking change (fix or feature that would cause existing functionality to not work as expected)
• [ ] A new research paper code implementation
• [ ] Other (Specify)

Tests

:memo: Please describe the tests that you ran to verify your changes.

• Provide instructions so we can reproduce.
• Please also list any relevant details for your test configuration.

Test Configuration:

Checklist

• [x] I have signed the Contributor License Agreement.
• [x] I have read guidelines for pull request.
• [x] My code follows the coding guidelines.
• [x] I have performed a self code review of my own code.
• [ ] I have commented my code, particularly in hard-to-understand areas.
• [x] I have made corresponding changes to the documentation.
• [x] My changes generate no new warnings.
• [ ] I have added tests that prove my fix is effective or that my feature works.

[jaeyounkim]

@barretzoph Please review this PR.