Update JWK examples to match the BLS JWK draft

[kdenhartog]

see here for documentation: https://github.com/mattrglobal/bls12381-jwk-draft/blob/main/draft-denhartog-pairing-curves-jose-cose.txt

Key take aways

1. Uses OKP instead of EC
2. Strings have been modified a bit based on discussion with @OR13 and @troyronda who were known implementors at the time.

[OR13]

@kdenhartog make sure to update this everywhere, as soon as the draft is stable...

especially in the security vocab.

[kdenhartog]

How stable are you thinking here? Like RFC for informational draft and registered in IANA or "we think we've got it solved and are waiting for standards process to finish".

I've sent a message to secdir at IETF in hopes of finding a way to take this through the RFC process at IETF, but I've not heard back yet. IETF's process is still an enigma to me.

[OR13]

@kdenhartog IMO, as soon as you have a perma url for a draft submitted to an SDO its worth updating the ccg document

[kdenhartog]

Sweet, I've got it here now: https://datatracker.ietf.org/doc/draft-denhartog-pairing-curves-jose-cose/

I'm going to be taken away from community contributions for a week or two while I help out our engineering team, but will take care of this when I've got the time to update it.

[Wind4Greg]

Updated document (PR #99) does not use JWK.