Fix docs
`doc_spotlight` nightly feature was renamed to `doc_notable_trait`
// ```console
// $ RUSTDOCFLAGS="--cfg docsrs -Znormalize-docs" cargo doc --open --all-features
// ```
-#![cfg_attr(all(docsrs, feature = "nightly"), feature(doc_cfg, doc_spotlight))]
+#![cfg_attr(all(docsrs, feature = "nightly"), feature(doc_cfg, doc_notable_trait))]
#![cfg_attr(feature = "nightly", feature(min_type_alias_impl_trait))]
#![cfg_attr(all(feature = "full", docsrs), deny(rustdoc::broken_intra_doc_links))]
//#![deny(missing_docs)]
