Address comments.

Author: jason-baker

acme/acme.go

@@ -309,7 +309,7 @@ func (c *Client) UpdateReg(ctx context.Context, acct *Account) (*Account, error)
 // AccountKeyRollover attempts to transition a client's account key to a new key.
 // On success client's Key is updated which is not concurrency safe.
 // On failure an error will be returned.
-// If the error is already registered with the ACME provider the following is true:
+// The new key is already registered with the ACME provider if the following is true:
 //  - error is of type acme.Error
 //  - StatusCode should be 409 (Conflict)
 //  - Location header will have the KID of the associated account

acme/jws.go

@@ -52,11 +52,11 @@ type jsonWebSignature struct {
 // The claimset is marshalled using json.Marshal unless it is a string.
 // In which case it is inserted directly into the message.
 //
-// If kid is non-empty, its quoted value is inserted in the protected head
+// If kid is non-empty, its quoted value is inserted in the protected header
 // as "kid" field value. Otherwise, JWK is computed using jwkEncode and inserted
 // as "jwk" field value. The "jwk" and "kid" fields are mutually exclusive.
 //
-// If nonce is non-empty, its quoted value is inserted in the protected head.
+// If nonce is non-empty, its quoted value is inserted in the protected header.
 //
 // See https://tools.ietf.org/html/rfc7515#section-7.
 func jwsEncodeJSON(claimset interface{}, key crypto.Signer, kid KeyID, nonce, url string) ([]byte, error) {