[clang] [llvm] [clang-format] Add CI check confirming ClangFormatStyleOptions.rst is up-to-date. (PR #111513)

[Aiden Grossman via cfe-commits]

https://github.com/boomanaiden154 requested changes to this pull request.

The documentation build workflow is not really the correct place to put this.

Also, why can't we just run the python script as part of building the docs instead of committing the result of the script to the repository?

https://github.com/llvm/llvm-project/pull/111513