chore(config): add a change for demo

[ghost]

What problem does this PR solve?

Issue Number: close #xxx

Problem Summary:

What is changed and how it works?

Proposal: xxx

What's Changed:

How it Works:

Check List

Tests

• [ ] Unit test
• [ ] Integration test
• [ ] Manual test (add detailed scripts or steps below)
• [ ] No code

Side effects

• [ ] Performance regression: Consumes more CPU
• [ ] Performance regression: Consumes more Memory
• [ ] Breaking backward compatibility

Documentation

• [ ] Affects user behaviors
• [ ] Contains syntax changes
• [ ] Contains variable changes
• [ ] Contains experimental features
• [ ] Changes MySQL compatibility

Release note

Please add a release note, or a 'None' if it is not needed.

Issue Number: ref #1

[mini-bot]

[REVIEW NOTIFICATION]

This pull request has been approved by:

• zuo-bot-2

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[mini-bot]

@zuo-bot-1: Thanks for your contribution, but this is just a code repository for testing.

Instructions for interacting with me using PR comments are available [here](https://prow.tidb.io/command-help). If you have questions or suggestions related to my behavior, please file an issue against the [ti-community-infra/tichi](https://github.com/ti-community-infra/tichi/issues/new?title=Prow%20issue:) repository.

[zuo-bot-2]

/merge

[mini-bot]

@zuo-bot-2: /merge is only allowed for the committers, you can assign this pull request to the committer in list by filling /assign @committer in the comment to help merge this pull request.

In response to [this](https://github.com/ti-community-infra/test-dev/pull/519#issuecomment-1174701949): >/merge Instructions for interacting with me using PR comments are available [here](https://prow.tidb.io/command-help). If you have questions or suggestions related to my behavior, please file an issue against the [ti-community-infra/tichi](https://github.com/ti-community-infra/tichi/issues/new?title=Prow%20issue:) repository.

[ghost]

/merge

[mini-bot]

@zuo-bot-1: /merge is only allowed for the committers, you can assign this pull request to the committer in list by filling /assign @committer in the comment to help merge this pull request.

In response to [this](https://github.com/ti-community-infra/test-dev/pull/519#issuecomment-1174703676): >/merge Instructions for interacting with me using PR comments are available [here](https://prow.tidb.io/command-help). If you have questions or suggestions related to my behavior, please file an issue against the [ti-community-infra/tichi](https://github.com/ti-community-infra/tichi/issues/new?title=Prow%20issue:) repository.

[wuhuizuo]

/merge

[mini-bot]

This pull request has been accepted and is ready to merge.

Commit hash: 9a209cc7542b2c05206c750823ee4b2fd8fd6ca7

[wuhuizuo]

/auto-cc