Update organization of Tome of Beasts 2023 to match other Kobold Press documents

[calumbell]

Every document on O5e published by Kobold Press includes the value Kobold Press™ for the organization property. However, Tome of Beasts is listed under the organization Kobold Press (without the trademark). This is clearly a mistake - every source published by Kobold Press should have the same organization. On staging, /v1/documents/?organization=Kobold+Press™ and /v1/documents/?organization=Kobold+Press currently return different results:

The current set-up makes a bit of a mess of the front-end, where the source selector parses these as two seperate sources: