Move spaces from before comments to within comments

tests/language/parameter_metadata_test.dart

 // Copyright (c) 2014, 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.
 
 // Test that metadata annotations can be handled on nested parameters.
 
 test(
-     @deprecated    /// 01: ok
+     @deprecated //   /// 01: ok
      f(
-       @deprecated  /// 02: ok
+       @deprecated // /// 02: ok
        a,
-       @deprecated  /// 03: ok
+       @deprecated // /// 03: ok
        g(
          @deprecated /// 04: ok
          b))) {}
 
 main() {
   test(null);
 }