使用mongodb中的现有字段更新字段

Question

mongodb结构就像;

[
    {id: "1" , name: "alex"},
    {id: "2" , name: "felix"},
    {id: "3" , name: "kelix"},
    {id: "4" , name: "hannah"}
]

我们假设我想在文档中添加“s”每个文档。

[
    {id: "1" , name: "alexs"},
    {id: "2" , name: "felixs"},
    {id: "3" , name: "kelixs"},
    {id: "4" , name: "hannahs"}
]


db.list.updateMany({}, { $set: {name: "$name" + "s"})}

但接下来是script contains errors.

是否可以使用mongodb中的现有值更新字段？