Update iot-hub-x509ca-overview.md

Author: kgremban

articles/iot-hub/iot-hub-x509ca-overview.md

@@ -72,7 +72,7 @@ Learn how to [complete this device connection step](./tutorial-x509-prove-posses
 
 ## Revoke a device certificate
 
-IoT Hub doesn't check certificate revocation lists when authenticating devices with certificate-based authentication. If you have a device that needs to be blocked from connecting to IoT Hub because of a potentially compromised certificate, you should disable the device in the identity registry. For more information, see [Disable or delete a device in an IoT hub](./iot-hub-create-through-portal.md#disable-or-delete-a-device-in-an-iot-hub).
+IoT Hub doesn't check certificate revocation lists from the certificate authority when authenticating devices with certificate-based authentication. If you have a device that needs to be blocked from connecting to IoT Hub because of a potentially compromised certificate, you should disable the device in the identity registry. For more information, see [Disable or delete a device in an IoT hub](./iot-hub-create-through-portal.md#disable-or-delete-a-device-in-an-iot-hub).
 
 ## Next Steps