Freshness pass - Updated the ms.date only and verified all the links

Author: Akhilesh-microsoft

articles/azure-web-pubsub/index.yml

@@ -10,7 +10,7 @@ metadata:
   ms.topic: landing-page
   author: yjin81
   ms.author: yajin1
-  ms.date: 05/22/2022 
+  ms.date: 07/24/2024 
 
 # linkListType: architecture | concept | deploy | download | get-started | how-to-guide | learn | overview | quickstart | reference | sample | tutorial | video | whats-new