ticdc: Fix some ticdc docs master 6.5

[ran-huang]

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• master (the latest development version)
• v7.1 (TiDB 7.1 versions)
• v7.0 (TiDB 7.0 versions)
• v6.6 (TiDB 6.6 versions)
• v6.5 (TiDB 6.5 versions)
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• v5.3 (TiDB 5.3 versions)
• v5.2 (TiDB 5.2 versions)
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What is the related PR or file link(s)?

• This PR is translated from: ticdc: Fix some ticdc docs master 6.5 docs-cn#13765
• Other reference link(s):

Do your changes match any of the following descriptions?

• Delete files
• Change aliases
• Need modification after applied to another branch
• Might cause conflicts after applied to another branch

[ti-chi-bot]

[REVIEW NOTIFICATION]

This pull request has been approved by:

• hfxsd

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[ran-huang]

/merge
/remove-status LGT1
/status LGT2

[ti-chi-bot]

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

Commit hash: 37302d2

[ti-chi-bot]

In response to a cherrypick label: new pull request created to branch release-6.5: #13680.