fixes rustdoc error

Author: assemblaj

src/stream/stream/mod.rs

@@ -1181,11 +1181,11 @@ extension_trait! {
         fn partial_cmp<S>(
            self,
            other: S
-        ) -> impl Future<Output = Option<Ordering>> + '_ [PartialCmpFuture<Self, S>]
+        ) -> impl Future<Output = Option<Ordering>>  [PartialCmpFuture<Self, S>]
         where
             Self: Sized + Stream,
             S: Stream,
-            Self::Item: PartialOrd<S::Item>,
+            <Self as Stream>::Item: PartialOrd<S::Item>,
         {
             PartialCmpFuture::new(self, other)
         }