ticdc: add a description for uri with special characters (#4310)
ticdc: add a description for uri with special characters (#4310)

* When a URI contains special characters, you needs to process these special characters with URL encoding.

* Update ticdc/manage-ticdc.md

* Update manage-ticdc.md

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