Update and rename README.md to cornower_.md

[Umbrella-Pad]

Related command

Description

Testing Guide

History Notes

[Component Name 1] BREAKING CHANGE: az command a: Make some customer-facing breaking change
[Component Name 2] az command b: Add some customer-facing feature

---

This checklist is used to make sure that common guidelines for a pull request are followed.

• The PR title and description has followed the guideline in Submitting Pull Requests.

• I adhere to the Command Guidelines.

• I adhere to the Error Handling Guidelines.

[azure-client-tools-bot-prd]

Validation for Azure CLI Full Test Starting...

Thanks for your contribution!

[azure-client-tools-bot-prd]

Validation for Breaking Change Starting...

Thanks for your contribution!

[yonzhan]

Thank you for your contribution! We will review the pull request and get back to you soon.

[microsoft-github-policy-service]

@Umbrella-Pad please read the following Contributor License Agreement(CLA). If you agree with the CLA, please reply with the following information.

@microsoft-github-policy-service agree [company="{your company}"]

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@microsoft-github-policy-service agree

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@microsoft-github-policy-service agree company="Microsoft"

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