## Description
<!-- Please include a summary of the pull request and any related issues
it fixes. Please also include relevant motivation and context. -->
The v3 documentation mislead people by using PassportJS even though it's
not in v3 and custom strategies should be used instead with the correct
link.
- [x] I have read and understand the
[CONTRIBUTING.md](https://github.com/payloadcms/payload/blob/main/CONTRIBUTING.md)
document in this repository.
## Type of change
<!-- Please delete options that are not relevant. -->
- [x] Chore (non-breaking change which does not add functionality)
- [x] This change requires a documentation update
## Checklist:
- [x] Existing test suite passes locally with my changes
- [x] I have made corresponding changes to the documentation