Just checked: opencc.hongKongToSimplified('滑鼠') NOT EQUAL to '鼠标';

I just got code and checked:

`
  console.log(opencc.traditionalToSimplified('滑鼠')); // === '鼠标';
  console.log(opencc.traditionalToSimplified('僞')); // === '偽';
  console.log(opencc.hongKongToSimplified('滑鼠'));
`

and result as title:
`
滑鼠

伪

滑鼠
`
Is anything I could adjust?
