Update 7-knowledge-check.yml

Author: QijieXue

learn-pr/wwl-azure/configure-azure-container-instances/7-knowledge-check.yml

@@ -20,7 +20,7 @@ content: |
 quiz:
   title: ""
   questions:
-  - content: "Why should you select virtual machines over containers for your configuration?"
+  - content: "Why should you select virtual machines over containers for your configuration?" 
     choices:
     - content: "Virtual machines run the user mode portion of an operating system and can be tailored to contain just the needed services for your app."
       isCorrect: false
@@ -52,4 +52,4 @@ quiz:
       explanation: "Incorrect. Container groups aren't a container management solution."
     - content: "Container Instances"
       isCorrect: false
-      explanation: "Incorrect. Azure Container Instances doesn't provide orchestration."
+      explanation: "Incorrect. Azure Container Instances doesn't provide orchestration."