reproduce:
        # https://github.com/intel-lab-lkp/linux/commit/a88007053f65ab396839b4e3084e6925a9be0894
        git remote add linux-review https://github.com/intel-lab-lkp/linux
        git fetch --no-tags linux-review Weijie-Yuan/docs-zh_CN-clarify-free-Nitrokey-requirements/20260821-011321
        git checkout a88007053f65ab396839b4e3084e6925a9be0894
        make menuconfig
        # enable CONFIG_COMPILE_TEST, CONFIG_WARN_MISSING_DOCUMENTS, CONFIG_WARN_ABI_ERRORS
        # pip install -r Documentation/sphinx/requirements.txt
        make htmldocs