[clang-tools-extra] [clangd] Improve Markup Rendering (PR #140498)

[via cfe-commits]

mccakit wrote:

Yeah, I saw it. Hope they look into it. This PR is like 2 months old, doxygen parsing at clang have some patches I found online that date back to 2019.

I'm currently using tcottins PR branch right now, because that is the only way of getting doxygen comments on my editor, which is Zed.

https://github.com/llvm/llvm-project/pull/140498