doxygen: updated doc for thread management subsystem

[unicornx]

清理 documentation/3.kernel/thread/thread.md。主要目的就是删除 markdown 文档中函数的参数解释部分，将有关参数的描述合并到源文件的 doxygen 注释中，在 markdown/html 中添加函数链接，让用户统一阅读 doxygen 的解释。

本 PR 虽然修改了一些源文件，但只是修改了源文件的 doxygen 注释部分，没有修改实际的源码逻辑。

[github-actions]

📌 Code Review Assignment

🏷️ Tag: documentation

Reviewers: @CXSforHPU @GorrayLi @lianux-mm @unicornx

Changed Files (Click to expand)

• documentation/3.kernel/thread/thread.md

🏷️ Tag: kernel

Reviewers: @GorrayLi @ReviewSun @hamburger-os @lianux-mm @wdfk-prog @xu18838022837

Changed Files (Click to expand)

• src/idle.c
• src/thread.c

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