Update instructions for enforcer and manager

Author: jjngx

site/content/configuration/security.md

@@ -77,6 +77,10 @@ The block below shows the code you will look for:
 #          name: nginx-log
 ```
 
+- Add **waf-enforcer** and **waf-config-mgr** container sections
+- Add `readOnlyFilesystem: true` in both containers security context sections
+
+
 ### Prometheus
 
 If Prometheus metrics are [enabled]({{< relref "/logging-and-monitoring/prometheus.md" >}}), we recommend [using HTTPS]({{< relref "configuration/global-configuration/command-line-arguments.md#cmdoption-prometheus-tls-secret" >}}).