[Improvement] DolphinScheduler DingTalk markdown msgtype

[zhangheng3]

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• I had searched in the issues and found no similar issues.

What happened

I used version 3.18 of the dolphinscheduler to configure the dingtalk alarm and select the markdown type, but the alarm output is still text. Why

What you expected to happen

Should output a normal markdown result

How to reproduce

Configure dingtalk in the background and set the markup type

Anything else

No response

Version

3.1.x

Are you willing to submit PR?

• Yes I am willing to submit a PR!

Code of Conduct

• I agree to follow this project's Code of Conduct