Stoppp using trippple consonants

pkg/testing/lib/dart_vm_suite.dart

 // Copyright (c) 2016, the Dart project authors. Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE.md file.
 
 library testing.dart_vm_suite;
 
 import 'testing.dart';
 
 Future<ChainContext> createContext(
-    Chain suite, Map<String, String> enviroment) async {
+    Chain suite, Map<String, String> environment) async {
   return new VmContext();
 }
 
 class VmContext extends ChainContext {
   final List<Step> steps = const <Step>[const DartVmStep()];
 }
 
 class DartVmStep extends Step<TestDescription, int, VmContext> {
   const DartVmStep();
 
   String get name => "Dart VM";
 
   Future<Result<int>> run(TestDescription input, VmContext context) async {
     StdioProcess process = await StdioProcess.run("dart", [input.file.path]);
     return process.toResult();
   }
 }
 
 main(List<String> arguments) => runMe(arguments, createContext);