Update all tests

tests/language/prefix_unqualified_invocation_test.dart

 // Copyright (c) 2015, 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.
 
 // Validate the following spec text from section 16.14.3 (Unqualified
 // invocation):
 //     An unqualifiedfunction invocation i has the form
 //     id(a1, ..., an, xn+1 : an+1, ..., xn+k : an+k),
 //     where id is an identifier.
 //     If there exists a lexically visible declaration named id, let fid be the
 //   innermost such declaration.  Then:
 //     - If fid is a prefix object, a compile-time error occurs.
 
 import "empty_library.dart" as p;
 
 class Base {
   void p() {}
 }
 
 class Derived extends Base {
   void f() {
-    p(); /// 01: compile-time error
+    p(); //# 01: compile-time error
   }
 }
 
 main() {
   new Derived().f();
-  p(); /// 02: compile-time error
+  p(); //# 02: compile-time error
 }