Update how-to-manage-subscriptions.md

Author: arielsaghiv

articles/defender-for-iot/organizations/how-to-manage-subscriptions.md

@@ -129,7 +129,7 @@ For example, you may have more devices that require monitoring if you're increas
 
 1. Select the **I accept the terms** option, and then select **Save**.
 
-Changes to your plan will take effect one hour after confirming the change.  This change will appear on your next monthly statement, and you will be charged based on the length of time each plan was in effect
+Changes to your plan will take effect one hour after confirming the change.  This change will appear on your next monthly statement, and you will be charged based on the length of time each plan was in effect.
 
 > [!NOTE]
 > **For an on-premises management console:**