[clang-tools-extra] [clang-doc] modify basic-project test (PR #97684)

[Paul Kirth via cfe-commits]

https://github.com/ilovepi commented:

This is headed in the right direction, but I'm not sure we want to match so many of the single line tags ... they don't seem particularly valuable from a testing standpoint. If you think we're missing tests for the HTML structure, then we should have some tests that focus on just that aspect that can be a bit simpler in nature than a full project.

Ultimately, I'd like to see a subset of tests that veryify that we do the documentation correctly, and a set of tests that exercise the format enough to be sure we're emiting well structured markdown/yaml/html.

https://github.com/llvm/llvm-project/pull/97684