Updates WAF related docs

With the recent additions in WAF
settings (i.e., logging and
blocking modes), the quick start
guide and the cluster application
related docs need to be updated

doc/topics/web_application_firewall/quick_start_guide.md

@@ -104,7 +104,10 @@ For this guide, we need to install Ingress. Ingress provides load balancing,
 SSL termination, and name-based virtual hosting, using NGINX behind
 the scenes. Make sure to switch the toogle to the enabled position before installing.
 
-![Cluster applications](./img/guide_waf_ingress_installation_v12_9.png)
+Both logging and blocking modes are available for WAF. While logging mode is useful for
+auditing anomalous traffic, blocking mode ensures the traffic doesn't reach past Ingress.
+
+![Cluster applications](./img/guide_waf_ingress_installation_v12_10.png)
 
 After Ingress is installed, wait a few seconds and copy the IP address that
 is displayed in order to add in your base **Domain** at the top of the page. For

doc/user/clusters/applications.md

@@ -295,7 +295,7 @@ from processing any requests for the given application or environment.
 1. Switching its respective toggle to the disabled position and applying changes through the **Save changes** button. This will reinstall
 Ingress with the recent changes.
 
-![Disabling WAF](../../topics/web_application_firewall/img/guide_waf_ingress_save_changes_v12_9.png)
+![Disabling WAF](../../topics/web_application_firewall/img/guide_waf_ingress_save_changes_v12_10.png)
 
 ##### Viewing Web Application Firewall traffic