fix: find mkdocs file without error

      "./${MKD_PREBUILD_SCRIPT}"

    fi

    # shellcheck disable=SC2012

    cfg_file=$(ls -1Xr mkdocs.yml mkdocs.yaml 2>/dev/null | head -1)

    cfg_file="mkdocs.yml"

    if [[ -f "mkdocs.yaml" ]]; then

      cfg_file="mkdocs.yaml"

    fi

    if ! grep -e '^site_url:' "$cfg_file"; then

      log_info "Update $cfg_file with site_url to ${CI_PAGES_URL}"

      echo "site_url: ${CI_PAGES_URL}" >> "$cfg_file"