Keyword argument 'user' should say 'username' in Pymongo authentication

Hello all,

I am using SCRAM-SHA-1 authentication with Pymongo, and the Pymongo docs use the keyword argument 'user' to specify the username. However, when I tried this argument, I received an error:

pymongo.errors.ConfigurationError: Unknown option user

When I tried again with 'username' instead, it worked fine.

Thanks!