Draft: Rebase main-jh and update index.md to graqhql spec

What does this MR do and why?

Rebase 了 main-jh，以修复 GraqhQL 相关的文档报错：https://jihulab.com/gitlab-cn/gitlab/-/jobs/12911385

https://gitlab.com/gitlab-org/gitlab/-/issues/415149

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