doc：Add a diagram of the distributed transaction AT pattern.

DIDA-lJ commented 2 months ago

What is the purpose of the change

Add a diagram of the distributed transaction AT pattern to make the AT pattern content easier to understand. 补充一下分布式事务 AT 模式的示意图，使得 AT 模式内容更加容易理解。

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DIDA-lJ commented 2 months ago

Okay, thank you.

slievrly commented 2 months ago

@DIDA-lJ I will close this PR, thank you very much for your feedback.