Fixing Acrolynx errors for main cards

Author: NWiddup

articles/fasttrack/index.yml

@@ -19,17 +19,17 @@ productDirectory:
     # Card
     - title: Watch Live
       imageSrc: ./media/azure-cloud.png
-      summary: Register on Reactor to join upcoming interactive live sessions and webcasts to get your questions answered real time by Azure engineers
+      summary: Register on Reactor to join upcoming interactive live sessions and webcasts to get your questions answered real time by Azure engineers.
       url: https://developer.microsoft.com/en-us/reactor/?search=fasttrack
     # Card
     - title: Watch on-demand recordings
       imageSrc: ./media/productivity.png
-      summary: Catch up on past sessions at your own pace
+      summary: Catch up on past sessions at your own pace.
       url: https://learn.microsoft.com/shows/learn-live/?terms=fasttrack
     # Card
     - title: Ask an Azure Engineer
       imageSrc: ./media/interact.png
-      summary: Get your technical questions answered directly from an Azure engineer
+      summary: Get your technical questions answered directly from an Azure engineer.
       url: https://learn.microsoft.com/answers/questions/ask/
 
 # conceptualContent section