Fix punctuation in lab instructions note

Author: staleycyn

learn-pr/wwl-azure/guided-project-configure-secure-access-workloads/includes/3-exercise-security-groups.md

@@ -23,6 +23,6 @@ Your organization requires the network traffic in the app-vnet to be tightly con
 Launch the exercise and follow the instructions. When you're done, be sure to return to this page so you can continue learning.
 
 > [!NOTE]
-> To complete this lab you need an [Azure subscription](https://azure.microsoft.com/pricing/purchase-options/azure-account?cid=msft_learn).
+> To complete this lab, you need an [Azure subscription](https://azure.microsoft.com/pricing/purchase-options/azure-account?cid=msft_learn).
 
 [![Button to launch exercise.](../media/launch-exercise.png)](https://go.microsoft.com/fwlink/?linkid=2261960)