Fix typo in observe-list

pkg/observe/lib/src/observable_list.dart

Index: pkg/observe/lib/src/observable_list.dart
diff --git a/pkg/observe/lib/src/observable_list.dart b/pkg/observe/lib/src/observable_list.dart
index 4a6b56a6ef3513369ea74b540df4ddb54fbe4109..3972fe62fde39e1b8d6f7ccb43438bfbf385e5f9 100644
--- a/pkg/observe/lib/src/observable_list.dart
+++ b/pkg/observe/lib/src/observable_list.dart
@@ -247,7 +247,11 @@ class ObservableList<E> extends ListBase<E> with ChangeNotifier {
     notifyPropertyChange(#isNotEmpty, oldValue != 0, newValue != 0);
   }
 
-  void discardListChages() {
+  /// Deprecated. Name had a typo, use [discardListChanges] instead.
+  @deprecated
+  void discardListChages() => discardListChanges();
+
+  void discardListChanges() {
     // Leave _listRecords set so we don't schedule another delivery.
     if (_listRecords != null) _listRecords = [];
   }