ticdc: Update ticdc mysql sink description (#5644)
ticdc: Update ticdc mysql sink description (#5644)

* Update ticdc mysql sink description

* Update ticdc mysql sink description

* Update ticdc mysql sink description

* fix

* fix

* Update ticdc/ticdc-overview.md

* trigger CI

Co-authored-by: sev7ndayyoo <58c447504617079edd1818ce73e374166afb6497@users.noreply.github.com>
Co-authored-by: TomShawn <3d0966147538bc5ab020e8dffa2c0b746f9728a6@users.noreply.github.com>
pingcap/docs-cn,pingcap/docs-cn