Add TiCDC TSO acquisition in sync-diff-inspector doc (#11218)
Add TiCDC TSO acquisition in sync-diff-inspector doc (#11218)

* add TiCDC check in sync-diff-inspector

* add

* Update sync-diff-inspector/upstream-downstream-diff.md

* Update sync-diff-inspector/upstream-downstream-diff.md

Co-authored-by: dongmen <aee5f06d062cd8a2b0f7404efc41d72a5f28b460@users.noreply.github.com>
Co-authored-by: shichun-0415 <21e49396de21ba1999fa7edf9177e7d3573ecd23@users.noreply.github.com>
pingcap/docs-cn,pingcap/docs-cn