[Feature Request] 建议将展开/关闭元素(<details>标签和<summary>标签)扩展为一个markdown语法

[TanHonN]

建议将展开/关闭元素(<details>标签和<summary>标签)扩展为一个markdown语法，我认为该语法比较常用，但是直接写<details>标签和<summary>标签比较繁琐，希望能推出一个markdown语法直接实现此功能。

I suggest extending the expand/close elements (<details> tag and <summary> tag) as a markdown syntax. I think this syntax is frequently-used, but writing the <details> tag and <summary> tag directly is inconvenient. I hope to introduce a markdown syntax to directly implement this function.