remove 'the' typo

Closes https://github.com/dart-lang/sdk/pull/60630

GitOrigin-RevId: 7bc7c3d476ed5ecec0fe545bbd18c391722a790e
Change-Id: Ic33a3c7384a55cb70c6333d59acffe75a070a31f
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/424900
Reviewed-by: Kevin Moore <kevmoo@google.com>
Commit-Queue: Kevin Moore <kevmoo@google.com>
diff --git a/sdk/lib/async/stream.dart b/sdk/lib/async/stream.dart
index 4c5f5ee..3c0c7e1 100644
--- a/sdk/lib/async/stream.dart
+++ b/sdk/lib/async/stream.dart
@@ -1611,7 +1611,7 @@
   /// If [equals] throws, the data event is replaced by an error event
   /// containing the thrown error. The behavior is equivalent to the
   /// original stream emitting the error event, and it doesn't change
-  /// the what the most recently emitted data event is.
+  /// what the most recently emitted data event is.
   ///
   /// The returned stream is a broadcast stream if this stream is.
   /// If a broadcast stream is listened to more than once, each subscription