Update test.dart for detection output of machine formatted errors

tests/language/src/NamedParametersTypeTest.dart

 // Copyright (c) 2011, 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 file.
 // VMOptions=--enable_type_checks
 //
 // Dart test program for testing named parameters in type tests.
 
 class NamedParametersTypeTest {
   static int testMain() {
     int result = 0;
     Function anyFunction;
     void acceptFunNumOptBool(void funNumOptBool(num num, [bool b])) { };
     void funNum(num num) { };
     void funNumBool(num num, bool b) { };
     void funNumOptBool(num num, [bool b = true]) { };
     void funNumOptBoolX(num num, [bool x = true]) { };
     anyFunction = funNum;  // No error.
     anyFunction = funNumBool;  // No error.
     anyFunction = funNumOptBool;  // No error.
     anyFunction = funNumOptBoolX;  // No error.
     acceptFunNumOptBool(funNum);  // No error.
     acceptFunNumOptBool(funNumOptBool);  // No error.
     try {
-      acceptFunNumOptBool(funNumBool);  // Throws an error.
+      acceptFunNumOptBool(funNumBool);  /// static type error
     } catch (TypeError error) {
       result += 1;
       Expect.stringEquals("(num, [b: bool]) => void", error.dstType);
       Expect.stringEquals("(num, bool) => void", error.srcType);
     }
     try {
-      acceptFunNumOptBool(funNumOptBoolX);  // Throws an error.
+      acceptFunNumOptBool(funNumOptBoolX);  /// static type error
     } catch (TypeError error) {
       result += 10;
       Expect.stringEquals("(num, [b: bool]) => void", error.dstType);
       Expect.stringEquals("(num, [x: bool]) => void", error.srcType);
     }
     return result;
   }
 }
 
 main() {
   Expect.equals(11, NamedParametersTypeTest.testMain());
 }