doc: switch from doc_auto_cfg to doc_cfg

The feature was renamed.

PR #165

Author: zesterer

Cargo.toml

@@ -60,7 +60,7 @@ doc-comment = "0.3.3"
 all-features = true
 # This opts into a nightly unstable option to show the features that need to be
 # enabled for public API items. To do that, we set 'docsrs', and when that's
-# enabled, we enable the 'doc_auto_cfg' feature.
+# enabled, we enable the 'doc_cfg' feature.
 #
 # To test this locally, run:
 #

src/lib.rs

@@ -227,7 +227,7 @@ this crate can be used without the standard library.
 #![no_std]
 #![deny(missing_docs)]
 #![deny(rustdoc::broken_intra_doc_links)]
-#![cfg_attr(docsrs, feature(doc_auto_cfg))]
+#![cfg_attr(docsrs, feature(doc_cfg))]
 
 extern crate alloc;
 #[cfg(any(test, feature = "std"))]