Format descriptions in schema docs are imprecise

[davidben]

The schema docs stay things like:

Pem encoded public key
Pem encoded private key

The format is called PEM, not Pem. I guess the types do the camel-case thing on the initialisms, but docs for human consumption should use the more conventional "PEM" spelling.

DER encoded public key

This doesn't say the format. It should specify whether this is a SubjectPublicKeyInfo or RSAPublicKey or whatever. Sampling things, it seems SubejctPublicKeyInfo is the most common, but I haven't checked all of them.

Pkcs 8 encoded private key

I mean, this is actually specific, but in human docs, it should be styled "PKCS #8". (If we're touching it, I might say "PKCS #8 PrivateKeyInfo" since PKCS #8 is the document.)

But I also agree with #178 (comment) that maybe we shouldn't have so many formats.