Address review comments

Author: jlian

articles/iot-operations/manage-mqtt-broker/tutorial-tls-and-x509.md

@@ -100,15 +100,22 @@ fabrikam_intermediate_ca.crt fabrikam_intermediate_ca.key \
 Then, generate client certificates for a thermostat, hygrometer, heater, and lightbulb.
 
 ```bash
+# Create a client certificate for the thermostat
 step certificate create thermostat thermostat.crt thermostat.key \
 --ca ./fabrikam_intermediate_ca.crt --ca-key ./fabrikam_intermediate_ca.key --bundle \
 --not-after 2400h --no-password --insecure
+
+# Create a client certificate for the hygrometer
 step certificate create hygrometer hygrometer.crt hygrometer.key \
 --ca ./fabrikam_intermediate_ca.crt --ca-key ./fabrikam_intermediate_ca.key --bundle \
 --not-after 2400h --no-password --insecure
+
+# Create a client certificate for the heater
 step certificate create heater heater.crt heater.key \
 --ca ./fabrikam_intermediate_ca.crt --ca-key ./fabrikam_intermediate_ca.key --bundle \
 --not-after 2400h --no-password --insecure
+
+# Create a client certificate for the lightbulb
 step certificate create lightbulb lightbulb.crt lightbulb.key \
 --ca ./fabrikam_intermediate_ca.crt --ca-key ./fabrikam_intermediate_ca.key --bundle \
 --not-after 2400h --no-password --insecure

articles/iot-operations/toc.yml

@@ -189,7 +189,7 @@ items:
         href: connect-to-cloud/tutorial-mqtt-bridge.md
       - name: Send data to Data Lake Storage
         href: connect-to-cloud/tutorial-opc-ua-to-data-lake.md
-      - name: TLS/X.509/ABAC
+      - name: Secure communication with TLS, X.509, and ABAC
         href: manage-mqtt-broker/tutorial-tls-and-x509.md
     - name: Troubleshoot
       items: