Describe the bug

The Beanie database configuration documentation is outdated. It currently instructs users to use motor.motor_asyncio.AsyncIOMotorClient. However, the latest versions of fastapi-users and Beanie now install pymongo 4.16+, which includes a native asynchronous client.

To Reproduce

Steps to reproduce the behavior:

1. Go to https://fastapi-users.github.io/fastapi-users/latest/configuration/databases/beanie/ (documentation page)
2. It has old motor configuration

Expected behavior

The documentation should reflect the new PyMongo Async Client.

Configuration

• Python version : 3.12
• FastAPI version : 0.128.0
• FastAPI Users version : 15.0.3

FastAPI Users configuration

N/A

Additional context

Add any other context about the problem here.