ticdc: add the Storage Sink feature to ticdc-overview.md

[Oreoxmt]

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Close #14957

TiCDC v6.5.0 supports replicating changed logs to Amazon S3, Azure Blob Storage, NFS, and other S3-compatible storage services.

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[Oreoxmt]

@benmeadowcroft PTAL

[benmeadowcroft]

The change you made looks good, but I would also suggest also updating the image on that page as well to include Object storage as a target. Perhaps you could add the attached image to your PR (replacing the current content of the image file /media/ticdc/cdc-architecture.png)

[benmeadowcroft]

Looks like the image I attached got left off my prior comment somehow, trying again!

[Oreoxmt]

@benmeadowcroft I have updated the architecture and the description in TiDB Migration Tools Overview, could you please help review these changes (387df20)? Thanks!

[benmeadowcroft]

@Oreoxmt yes, this PR addresses the issues I raised in #14957
Thank you!

[ti-chi-bot]

[LGTM Timeline notifier]

Timeline:

• 2023-10-13 01:50:23.14182332 +0000 UTC m=+1362620.728933461: ☑️ agreed by hfxsd.

[Oreoxmt]

/approve

[ti-chi-bot]

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[ti-chi-bot]

In response to a cherrypick label: new pull request created to branch release-6.5: #15040.

[ti-chi-bot]

In response to a cherrypick label: new pull request created to branch release-7.1: #15041.

[ti-chi-bot]

In response to a cherrypick label: new pull request created to branch release-7.2: #15042.

[ti-chi-bot]

In response to a cherrypick label: new pull request created to branch release-7.3: #15043.

[ti-chi-bot]

In response to a cherrypick label: new pull request created to branch release-7.4: #15044.