Fix formatting

Author: alygin

crossbeam-channel/src/channel.rs

@@ -232,7 +232,7 @@ pub fn at(when: Instant) -> Receiver<Instant> {
 /// # Examples
 ///
 /// Using a `never` channel to optionally add a timeout to [`select!`]:
-/// 
+///
 /// [`select!`]: crate::select!
 ///
 /// ```

crossbeam-channel/src/select.rs

@@ -518,7 +518,7 @@ pub(crate) fn select_deadline<'a>(
 ///
 /// The [`select!`] macro is a convenience wrapper around `Select`. However, it cannot select over a
 /// dynamically created list of channel operations.
-/// 
+///
 /// [`select!`]: crate::select!
 ///
 /// Once a list of operations has been built with `Select`, there are two different ways of