Confusing documentation for collection.aggregate collation option

At https://mongodb.github.io/node-mongodb-native/3.4/api/Collection.html#aggregate, I see:

Specify collation (MongoDB 3.4 or higher) settings for update operation (see 3.4 documentation for available fields).

Is the "update operation" bit a copy/paste error? Also, what exact documentation is the last parenthesis referring to?