ticdc: add more parameters

[wk989898]

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add more param description for MySQL sink url

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[ti-chi-bot]

Hi @wk989898. Thanks for your PR.

I'm waiting for a pingcap member to verify that this patch is reasonable to test. If it is, they should reply with /ok-to-test on its own line. Until that is done, I will not automatically test new commits in this PR, but the usual testing commands by org members will still work. Regular contributors should join the org to skip this step.

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[CharlesCheung96]

This pr need to be cheey-picked to LTS release version.

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[Copilot]

Pull Request Overview

This PR updates the MySQL sink URL documentation for TiCDC by adding more parameter descriptions and specifying additional limits and options.

• Updated existing parameters (e.g., worker-count and max-txn-row) with maximum value limits.
• Added new parameters including max-multi-update-row, batch-dml-enable, read-timeout, write-timeout, timeout, and tidb-txn-mode.

Comments suppressed due to low confidence (1)

ticdc/ticdc-sink-to-mysql.md:64

• [nitpick] Consider changing '下游数据' to '下游数据库' for clarity and consistency.

| `3306`         | 下游数据的连接端口。                                 |

[lilin90]

/lgtm

[ti-chi-bot]

[LGTM Timeline notifier]

Timeline:

• 2025-03-27 08:02:07.351808028 +0000 UTC m=+1120221.036044124: ☑️ agreed by lilin90.
• 2025-03-27 08:08:07.478051299 +0000 UTC m=+1120581.162287395: ☑️ agreed by hfxsd.

[hfxsd]

/approve

[ti-chi-bot]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: hfxsd

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[ti-chi-bot]

In response to a cherrypick label: new pull request created to branch release-8.1: #20131.
But this PR has conflicts, please resolve them!

[ti-chi-bot]

In response to a cherrypick label: new pull request created to branch release-8.5: #20132.