message: Enable doc cfg for hdf5-sys
diff: #![cfg_attr(feature = "cargo-clippy", allow(clippy::missing_safety_doc))]
  #![cfg_attr(feature = "cargo-clippy", allow(clippy::cognitive_complexity))]
  #![cfg_attr(feature = "cargo-clippy", allow(clippy::upper_case_acronyms))]
  +#![cfg_attr(docsrs, feature(doc_cfg))]
  macro_rules! extern_static {
  ($dest:ident, $src:ident) => {
  