Update iot-hub-preview-mode.md

Author: xujing-ms

articles/iot-hub/iot-hub-preview-mode.md

@@ -71,5 +71,5 @@ Do *not* use an IoT hub in preview mode for production. Preview mode is intended
 ## Next steps
 
 - To preview the MQTT 5 support, see [IoT Hub MQTT 5 support overview (preview)](../iot/iot-mqtt-5-preview.md)
-- To preview the ECC server certificate, see [Elliptic Curve Cryptography (ECC) server TLS certificate (preview)](iot-hub-tls-support.md#elliptic-curve-cryptography-ecc-server-tls-certificate-preview)
-- To preview TLS fragment size negotiation, see [TLS maximum fragment length negotiation (preview)](iot-hub-tls-support.md#tls-maximum-fragment-length-negotiation-preview)
+- To preview the ECC server certificate, see [Elliptic Curve Cryptography (ECC) server TLS certificate (preview)](iot-hub-tls-support.md#elliptic-curve-cryptography-ecc-server-tls-certificate)
+- To preview TLS fragment size negotiation, see [TLS maximum fragment length negotiation (preview)](iot-hub-tls-support.md#tls-maximum-fragment-length-negotiation)