Merge pull request #45 from Tim-Zhang/doc-fix

Hide docs for mod async to avoid the confusion

Author: Hui Zhu

src/asynchronous/mod.rs

@@ -3,7 +3,7 @@
 // SPDX-License-Identifier: Apache-2.0
 //
 
-//! Server and client in async mode.
+//! Server and client in async mode (alias r#async).
 
 pub mod client;
 pub mod server;

src/lib.rs

@@ -59,5 +59,6 @@ cfg_sync! {
 
 cfg_async! {
     pub mod asynchronous;
+    #[doc(hidden)]
     pub use crate::asynchronous as r#async;
 }