You need a wiki has a focus on direct integration with Google Drive and Google Docs.

If your team is already using Google docs it can be a great option and timesaver. You don't have to worry about multiple sources of truth or teaching new employees how to use a new wiki system.

The Docs editor also comes with powerful built-in features such as document collaboration, suggestions, chat, and more that other wiki solutions do not.

You can setup a wiki without worrying about vendor lock-in.
If you need to move to another provider in the future, you can do so without a worry, everything is stored in your Google Drive.