Fix Local API update typing

[xHomu]

Payload allows for updating doc with only partial data, but the inferred type requires the whole collection type. Closes #2009

Description

• I have read and understand the CONTRIBUTING.md document in this repository

Type of change

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to not work as expected)
• This change requires a documentation update

Checklist:

• I have added tests that prove my fix is effective or that my feature works
• Existing test suite passes locally with my changes
• I have made corresponding changes to the documentation

[denolfe]

Thanks for the PR @xHomu . I had to make just a small update, so it would compile.