Rollup merge of #145678 - ttajakka:master, r=estebank

Fix typo in docstring

The return type is correct in the source code but incorrect in the docstring.

1 files changed, 1 insertions, 1 deletions

diff --git a/library/core/src/task/poll.rs b/library/core/src/task/poll.rs
index ca668361ef6..59ffe7ad49c 100644
--- a/library/core/src/task/poll.rs
+++ b/library/core/src/task/poll.rs
@@ -125,7 +125,7 @@ impl<T, E> Poll<Result<T, E>> {
         }
     }
 
-    /// Maps a `Poll::Ready<Result<T, E>>` to `Poll::Ready<Result<T, F>>` by
+    /// Maps a `Poll::Ready<Result<T, E>>` to `Poll::Ready<Result<T, U>>` by
     /// applying a function to a contained `Poll::Ready(Err)` value, leaving all other
     /// variants untouched.
     ///