Update all tests

tests/corelib_strong/string_from_environment3_test.dart

Index: tests/corelib_strong/string_from_environment3_test.dart
diff --git a/tests/corelib_strong/string_from_environment3_test.dart b/tests/corelib_strong/string_from_environment3_test.dart
index 589cca2d52f1ca6e66bb39be2678e19b95348d04..8af8fda15fcb4043a67ce1ae914e290e068600b8 100644
--- a/tests/corelib_strong/string_from_environment3_test.dart
+++ b/tests/corelib_strong/string_from_environment3_test.dart
@@ -3,9 +3,9 @@
 // BSD-style license that can be found in the LICENSE file.
 
 main() {
-  const String.fromEnvironment('NOT_FOUND', defaultValue: 1);  /// 01: compile-time error
-  const String.fromEnvironment('NOT_FOUND', defaultValue: true);  /// 02: compile-time error
-  const String.fromEnvironment(null);  /// 03: compile-time error
-  const String.fromEnvironment(1);  /// 04: compile-time error
-  const String.fromEnvironment([]);  /// 05: compile-time error
+  const String.fromEnvironment('NOT_FOUND', defaultValue: 1);  //# 01: compile-time error
+  const String.fromEnvironment('NOT_FOUND', defaultValue: true);  //# 02: compile-time error
+  const String.fromEnvironment(null);  //# 03: compile-time error
+  const String.fromEnvironment(1);  //# 04: compile-time error
+  const String.fromEnvironment([]);  //# 05: compile-time error
 }