Comment contains incorrect code example.

[coryschwartz]

This comment here

gives an example for encrypting a JWT toekn in a JWE container, and the example tells us to do this:

//	   Encrypt(jwa.RSA_OAEP, key.PublicKey).

But I think this might be wrong. Encrypt() wants an EncryptionOption which is not implemented
by the algorithm or the the key. Instead, I think this what is intended.

// publicKey := recipientPublicKeyFromSomewhereMaybeFromCache()
...
// Encrypt(jwt.WithEncryptOption(jwe.WithKey(jwa.RSA_OAEP(), publicKey)))

[lestrrat]

That's probably an artifact from v1. Thanks.