Fix explanation text for knowledge check question

Author: v-mangrandhi

learn-pr/wwl-azure/protect-govern-ai-ready-infrastructure-azure/6-knowledge-check.yml

@@ -31,7 +31,7 @@ quiz:
       explanation: "The first option implements least-privilege access by granting different permission levels based on environment sensitivity: Cognitive Services Contributor in development allows the team to create and configure resources for research, while Cognitive Services User in production provides read-only access for viewing configurations and consuming endpoints without modification capabilities. Separate resource groups create clear security boundaries that RBAC can enforce, preventing accidental or intentional cross-environment changes."
     - content: "Assign Owner role at the subscription scope to enable full development flexibility and rely on Azure Policy to prevent unauthorized production changes through approval workflows"
       isCorrect: false
-      explanation: "he second option violates least-privilege principles by granting Owner role, which includes permissions to modify access controls, delete resources, and change billing settings far beyond what the research scenario requires."
+      explanation: "The second option violates least-privilege principles by granting Owner role, which includes permissions to modify access controls, delete resources, and change billing settings far beyond what the research scenario requires."
     - content: "Create a custom role with wildcard permissions for all Cognitive Services operations and assign it at the resource group scope, then configure conditional access policies requiring manager approval for production resource access"
       isCorrect: false
-      explanation: "The third option wildcard permissions eliminate granular control and still grant excessive access, while conditional access policies alone can't enforce resource-level permission restrictions—they control authentication and access conditions but don't replace RBAC for authorization decisions."
+      explanation: "The third option wildcard permissions eliminate granular control and still grant excessive access, while conditional access policies alone can't enforce resource-level permission restrictions—they control authentication and access conditions but don't replace RBAC for authorization decisions."