Spelling fixes e to i.

tests/compiler/dart2js_extra/js_array_index_error_test.dart

Index: tests/compiler/dart2js_extra/js_array_index_error_test.dart
diff --git a/tests/compiler/dart2js_extra/js_array_index_error_test.dart b/tests/compiler/dart2js_extra/js_array_index_error_test.dart
index ca0ffe0c69873b8e2e1aaae9a09ad0de994200bf..be5e310be78999ea0e8ba0e303e33573e4bb5ec9 100644
--- a/tests/compiler/dart2js_extra/js_array_index_error_test.dart
+++ b/tests/compiler/dart2js_extra/js_array_index_error_test.dart
@@ -2,7 +2,7 @@
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
-// Test that optimized JSArray indexers enerate the same error as dynamically
+// Test that optimized JSArray indexers generate the same error as dynamically
 // dispatched calls.
 
 import 'package:expect/expect.dart';