Disable nightly feature doc_auto_cfg on docsrs (#392)

* Rm doc_auto_cfg from codecs

Signed-off-by: Jiahao XU <30436523+NobodyXu@users.noreply.github.com>

* Rm doc_auto_cfg from core

Signed-off-by: Jiahao XU <30436523+NobodyXu@users.noreply.github.com>

* Rm doc_auto_cfg from async-compression

Signed-off-by: Jiahao XU <30436523+NobodyXu@users.noreply.github.com>

---------

Signed-off-by: Jiahao XU <30436523+NobodyXu@users.noreply.github.com>

Author: NobodyXu

crates/async-compression/src/lib.rs

@@ -143,7 +143,7 @@
 //! Enable the `xz-parallel` feature to enable multi-threading support.
 //!
 
-#![cfg_attr(docsrs, feature(doc_auto_cfg, doc_cfg))]
+#![cfg_attr(docsrs, feature(doc_cfg))]
 #![cfg_attr(not(all), allow(unused))]
 
 #[macro_use]

crates/compression-codecs/src/lib.rs

@@ -1,6 +1,6 @@
 //! Adaptors for various compression algorithms.
 
-#![cfg_attr(docsrs, feature(doc_auto_cfg, doc_cfg))]
+#![cfg_attr(docsrs, feature(doc_cfg))]
 
 use std::io::Result;
 

crates/compression-core/src/lib.rs

@@ -1,6 +1,6 @@
 //! Abstractions for compression algorithms.
 
-#![cfg_attr(docsrs, feature(doc_auto_cfg, doc_cfg))]
+#![cfg_attr(docsrs, feature(doc_cfg))]
 
 mod level;
 pub mod unshared;