Update prettierrc for Windows

[zaudtke]

Describe the bug See https://github.com/ThatConference/that.us/discussions/558 from That.US repo.

Windows users are unable to lint properly.

To Reproduce Steps to reproduce the behavior: npm run validate or npm run lint

Expected behavior Does not fail with Error Delete 'CR'

Screenshots See Linked issue above

Device(s)/Browser(s) this is occurring on

• OS: windows

Additional context Added per comment in THAT.US thread.