Update Todo.md

[JiangLongy]

在对Laf 的探索中发现，当我用VScode向例子一样想调用Laf上的方法时，总是在报错，在经过漫长的查找之下，在一个不起眼的小角落里发现了客户端SDK目前只支持POST请求，作为一名写过文章宣传Laf小白，我认为在这里如果提前标注一下客户端SDK暂时只支持发送POST较好，对于我这种小白较为友好

[cla-assistant]

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[sweep-ai]

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• Apply: All new business logic should have corresponding unit tests.
• Apply: Refactor large functions to be more modular.
• Apply: Add docstrings to all functions and file headers.

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[nightwhite]

可以支持get请求，后续优化一下