[

{_id: 1, score: 99},

{_id: 2, score: 78},

{_id: 3, score: 60},

]

我需要更新成如下结果

[

{_id: 1, score: 100},

{_id: 2, score: 80},

{_id: 3, score: 65},

]

请问db.collection().where().update()应该怎么实现呢