047e7cf36f
Follow-up to #38089. The merged PR removed --recurse-submodules from the installer, CI, and getting-started docs, but missed the same stale clause in: - CONTRIBUTING.md (Prerequisites table) - website/docs/developer-guide/contributing.md (table + clone command) - zh-Hans mirror of the developer-guide contributing doc git-lfs is kept in the Git requirement rows since it's a separate, real prerequisite. No .gitmodules has existed since the Atropos RL submodule was removed in #26106.