polish

Signed-off-by: Yoshua Wuyts <yoshuawuyts@gmail.com>

src/stream/stream/merge.rs

@@ -3,11 +3,11 @@ use std::task::{Context, Poll};
 
 use futures_core::Stream;
 
-/// A stream merging two streams.
+/// A stream that merges two other streams into a single stream.
 ///
 /// This stream is returned by [`Stream::merge`].
 ///
-/// [`Stream::merge`]:
+/// [`Stream::merge`]: trait.Stream.html#method.merge
 #[derive(Debug)]
 pub struct Merge<L, R> {
     left: L,

src/stream/stream/mod.rs

@@ -34,7 +34,6 @@ mod for_each;
 mod fuse;
 mod inspect;
 mod map;
-mod merge;
 mod min_by;
 mod next;
 mod nth;
@@ -88,6 +87,8 @@ cfg_if! {
 
 cfg_if! {
     if #[cfg(any(feature = "unstable", feature = "docs"))] {
+        mod merge;
+
         use std::pin::Pin;
 
         use crate::future::Future;