Update secure workloads and knowledge check units

Author: staleycyn

learn-pr/wwl-azure/design-ai-workloads/7-secure-workloads.yml

@@ -3,7 +3,7 @@ uid: learn.wwl.design-ai-workloads.secure-workloads
 title: "Secure AI workloads in Azure"
 metadata:
   title: "Secure AI Workloads in Azure"
-  description: "Learn to secure AI workloads by identifying risks, protecting resources, and safeguarding data.
+  description: "Learn to secure AI workloads by identifying risks, protecting resources, and safeguarding data.""
   ms.date: 01/09/2026
   author: wwlpublish
   ms.author: cynthist

learn-pr/wwl-azure/design-ai-workloads/9-knowledge-check.yml

@@ -18,7 +18,7 @@ quiz:
     choices:
     - content: "SaaS, because it provides built-in governance and minimal setup"
       isCorrect: false
-      explanation: "Incorrect. SaaS focuses on ease of use and productivity, not custom or regulated model training."
+      explanation: "Incorrect. SaaS focuses on ease of use and productivity, not model training."
     - content: "PaaS, because it reduces operational overhead while supporting AI workloads"
       isCorrect: false
       explanation: "Incorrect. PaaS reduces infrastructure management but does not provide the level of control required for this scenario."