Update docker-compose.md

[zhicheng-ning]

fix spring.r2dbc.url of mysql demo

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Name	Status	Preview	Comments	Updated (UTC)
halo-docs	✅ Ready (Inspect)	Visit Preview	💬 Add feedback	Oct 26, 2023 7:32am

[f2c-ci-robot]

@zhicheng-ning: Adding the "do-not-merge/release-note-label-needed" label because no release-note block was detected, please follow our release note process to remove it.

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[f2c-ci-robot]

[APPROVALNOTIFIER] This PR is NOT APPROVED

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[zhicheng-ning]

/assign @ruibaby

[ruibaby]

感谢参与贡献，但我不是很清楚带端口和不带端口的区别，虽然我尝试之后可以正常链接：

cc @JohnNiang

[JohnNiang]

感谢 @zhicheng-ning 的贡献！

当前 PR 将会被关闭，具体原因请看：#269 (comment)。

/close

[f2c-ci-robot]

@JohnNiang: Closed this PR.

In response to this:

感谢 @zhicheng-ning 的贡献！

当前 PR 将会被关闭，具体原因请看：#269 (comment)。

/close

Instructions for interacting with me using PR comments are available here. If you have questions or suggestions related to my behavior, please file an issue against the kubernetes/test-infra repository.