changed files by pdets auto publish service, publishid[a75c21dd-d6d4-4732-9b5e-f095e8ee4950] and do [publish].

Author: wwlpublish

learn-pr/wwl-azure/configure-blob-storage/10-knowledge-check.yml

@@ -33,7 +33,7 @@ quiz:
     choices:
     - content: "Hot tier to cool tier"
       isCorrect: true
-      explanation: "Correct. Changes between the hot and cool tiers happen immediately"
+      explanation: "Correct. Changes between the hot and cool tiers happen immediately."
     - content: "Archive tier to cool tier"
       isCorrect: false
       explanation: "Incorrect. Changes from the archive tier don't happen immediately."