clang-format: [JS] Fix indentation in dict literals.

Before:
  return {
    'finish':
        //
        a
        };

After:
  return {
    'finish':
        //
        a
  };

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@217235 91177308-0d34-0410-b5e6-96231b3b80d8