Update the description content type to markdown - #105

 twine upload --repository-url https://test.pypi.org/legacy/ dist/*

Uploading distributions to https://test.pypi.org/legacy/
Enter your username: aws-cloudformation-developers
Enter your password:
Uploading cloudformation_cli_python_plugin-2.0.0-py3-none-any.whl
100%|█████████████████████████████████████████████████████████████████████████████████████████████████████████████████| 23.3k/23.3k [00:01<00:00, 21.5kB/s]NOTE: Try --verbose to see response content.
HTTPError: 400 Client Error: The description failed to render in the default format of reStructuredText. See https://test.pypi.org/help/#description-content-type for more information. for url: https://test.pypi.org/legacy/

 twine upload --repository-url https://test.pypi.org/legacy/ dist/*
Uploading distributions to https://test.pypi.org/legacy/
Enter your username: aws-cloudformation-developers
Enter your password:
Uploading cloudformation_cli_python_plugin-2.0.0-py3-none-any.whl
100%|█████████████████████████████████████████████████████████████████████████████████████████████████████████████████| 23.3k/23.3k [00:02<00:00, 11.9kB/s]Uploading cloudformation-cli-python-plugin-2.0.0.tar.gz
100%|█████████████████████████████████████████████████████████████████████████████████████████████████████████████████| 21.5k/21.5k [00:01<00:00, 20.2kB/s]
View at:
https://test.pypi.org/project/cloudformation-cli-python-plugin/2.0.0/