docs: contributing guide references removed clang-format workflow

[Sev7een]

docs: contributing guide references removed clang-format workflow

What I noticed

While reading through the contributing guide, I noticed the Clang Format section references .github/workflows/cpp-clang-format-lint.yml, but that workflow file is not present in the current repo. The current lint entrypoint appears to be .github/workflows/_common-lint.yml, which calls LizardByte's shared common lint workflow.

The local formatting command in the same section also looks a little stale: it misses .c/.hpp, leaves globs unquoted, and does not use null-safe arguments.

Suggested fix

Update docs/contributing.md so the Clang Format section:

• points to .github/workflows/_common-lint.yml
• matches the C/C++ extensions checked by the shared lint workflow
• uses a safer find ... -print0 | xargs -0 ... command

I can open a small docs PR for this if that sounds right.

[ReenigneArcher]

Can just remove The workflow file responsible for clang format testing is .github/workflows/cpp-clang-format-lint.yml. from the docs. It's kind of a pointless statement these days... and probably hasn't been updated in a while because we manage the linting in our .github repo instead of in Sunshine directly.

The find example should probably be removed as well and just have the python version. The python one will also need an update to be prefixed by uv run --no-sync, see #5222