[Doc] The Slack link in the document is out-date. #15421
Description
Search before asking
- I had searched in the issues and found no similar feature requirement.
Description
Slack of apache dolphinscheduler's link is out-dated, can't join the slack.
Documentation Links
No response
Are you willing to submit a PR?
- Yes I am willing to submit a PR!
Code of Conduct
- I agree to follow this project's Code of Conduct