[docs] translate mysql cdc doc to Chinese.#1391

[gtk96]

This PR Main solutions #1391

[leonardBang]

Thanks @RookieGao for the contribution, LGTM. I also help improve a little.

[gtk96]

@leonardBang I have put forward some suggestions for improving the current document. If you agree, I will make corresponding changes at night, because I don't have a suitable environment to deal with it during the day

[leonardBang]

@leonardBang I have put forward some suggestions for improving the current document. If you agree, I will make corresponding changes at night, because I don't have a suitable environment to deal with it during the day

I've addressed the your suggestions.

[gtk96]

The exciting work is finished. Thank you for your guidance @leonardBang

[leonardBang]

The exciting work is finished. Thank you for your guidance @leonardBang

Thanks @RookieGao for the great work, this is the first Chinese connector document, I'm pretty sure your contribution will help Chinese speaking user a lot.

[leonardBang]

@RookieGao Would you also like to backport the PR to release-2.2 branch? as we recommended user to look up the latest release version instead of the master version.

[gtk96]

@RookieGao Would you also like to backport the PR to release-2.2 branch? as we recommended user to look up the latest release version instead of the master version.

of course