Update pubspec.yaml comment too.
diff --git a/pubspec.yaml b/pubspec.yaml
index 6e80834..e857c88 100644
--- a/pubspec.yaml
+++ b/pubspec.yaml
@@ -1,7 +1,7 @@
 name: isolate
 version: 2.1.1
-author: Dart Team <misc@dartlang.org>
 description: >-
+  DISCONTINUED PACKAGE
   Utility functions and classes related to the 'dart:isolate' library.
 homepage: https://github.com/dart-lang/isolate