ticdc: refine the docs about the status in cdc (#3993)
ticdc: refine the docs about the status in cdc (#3993)

* update

* Update troubleshoot-ticdc.md

Co-authored-by: ti-srebot <354121b1fcd840b60f1eb3b56f3ea5cc78ec06dd@users.noreply.github.com>
pingcap/docs-cn,pingcap/docs-cn