Fix typo in comment.

authority/authorize.go

@@ -286,8 +286,9 @@ func (a *Authority) authorizeRenew(cert *x509.Certificate) error {
 	if err != nil {
 		var ok bool
 		// For backward compatibility this method will also succeed if the
-		// provisioner does not have an extension. LoadByCertificate returns the
-		// noop provisioner if this happens, and it allows certificate renewals.
+		// certificate does not have a provisioner extension. LoadByCertificate
+		// returns the noop provisioner if this happens, and it allows
+		// certificate renewals.
 		if p, ok = a.provisioners.LoadByCertificate(cert); !ok {
 			return errs.Unauthorized("authority.authorizeRenew: provisioner not found", opts...)
 		}