Fix typo in streams.

sdk/lib/async/stream.dart

Index: sdk/lib/async/stream.dart
diff --git a/sdk/lib/async/stream.dart b/sdk/lib/async/stream.dart
index ae003e3e1bf75b7c163790338b46da22824076fc..f6b235a9a61f52f75ef10668a75fdedfe87d1269 100644
--- a/sdk/lib/async/stream.dart
+++ b/sdk/lib/async/stream.dart
@@ -906,7 +906,7 @@ abstract class Stream<T> {
    * Skips data events if they are equal to the previous data event.
    *
    * The returned stream provides the same events as this stream, except
-   * that it never provides two consequtive data events that are equal.
+   * that it never provides two consecutive data events that are equal.
    *
    * Equality is determined by the provided [equals] method. If that is
    * omitted, the '==' operator on the last provided data element is used.
@@ -1459,7 +1459,7 @@ class StreamView<T> extends Stream<T> {
 /**
  * Abstract interface for a "sink" accepting multiple entire streams.
  *
- * A consumer can accept a number of consequtive streams using [addStream],
+ * A consumer can accept a number of consecutive streams using [addStream],
  * and when no further data need to be added, the [close] method tells the
  * consumer to complete its work and shut down.
  *