Fix tab groups

Author: jlian

articles/iot-operations/connect-to-cloud/howto-configure-kafka-endpoint.md

@@ -517,7 +517,7 @@ kafkaSettings: {
 
 To use anonymous authentication, update the authentication section of the Kafka settings to use the Anonymous method.
 
-# Portal(#tab/portal)
+# [Portal](#tab/portal)
 
 Not yet supported in the operations experience. See [known issues](../troubleshoot/known-issues.md).
 

articles/iot-operations/connect-to-cloud/howto-configure-mqtt-endpoint.md

@@ -591,7 +591,7 @@ If the audience isn't specified, the default audience for the Azure IoT Operatio
 
 To use anonymous authentication, set the authentication method to `Anonymous`.
 
-# Portal(#tab/portal)
+# [Portal](#tab/portal)
 
 Not yet supported in the operations experience. See [known issues](../troubleshoot/known-issues.md).