fix expanded images

Author: SarahBoris

articles/operator-5g-core/media/overview-product/architecture-5g-core-expanded.png

@@ -29,7 +29,7 @@ items:
     href: quickstart-deploy-5g-core.md
   - name: Monitor the status of your Azure Operator 5G Core deployment
     href: quickstart-monitor-deployment-status.md
-  - name: Peform health and configuration checks post-deployment in Azure Operator 5G Core
+  - name: Perform health and configuration checks post-deployment in Azure Operator 5G Core
     href: quickstart-perform-checks-post-deployment.md
 - name: How-to guides
   items: