Apply suggestions from code review

Co-authored-by: Herman Slatman <hslatman@users.noreply.github.com>

authority/authorize.go

@@ -287,7 +287,7 @@ func (a *Authority) authorizeRenew(cert *x509.Certificate) error {
 		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 allow certificate renewals.
+		// 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...)
 		}

authority/provisioners.go

@@ -62,7 +62,7 @@ func (a *Authority) unsafeLoadProvisionerFromExtension(crt *x509.Certificate) (p
 }
 
 func (a *Authority) unsafeLoadProvisionerFromDatabase(crt *x509.Certificate) (provisioner.Interface, error) {
-	// certificateDataGetter is an interface that can be use to retrieve the
+	// certificateDataGetter is an interface that can be used to retrieve the
 	// provisioner from a db or a linked ca.
 	type certificateDataGetter interface {
 		GetCertificateData(string) (*db.CertificateData, error)