[AutoPR track2_azure-mgmt-recoveryservicesbackup] [Test] Update readme.python.md

[azure-sdk]

Create to sync openapi-env-test/azure-rest-api-specs#3685

You can install the use using pip install of the artifacts.

[github-actions]

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[github-actions]

Hi @azure-sdk. Thank you for your contribution. Since there hasn't been recent engagement, we're going to close this out. Feel free to respond with a comment containing /reopen if you'd like to continue working on these changes. Please be sure to use the command to reopen or remove the no-recent-activity label; otherwise, this is likely to be closed again with the next cleanup pass.