Update respond-file-alerts.md

Adding a note about timeout for the action

Author: amirsc3

defender-endpoint/respond-file-alerts.md

@@ -91,6 +91,7 @@ This action takes effect on devices with Windows 10, version 1703 or later, and
 
    > [!NOTE]
    > The stop and quarantine file action is limited to a maximum of 1000 devices. To stop a file on a larger number of devices, see [Add indicator to block or allow file](#add-indicator-to-block-or-allow-a-file).
+   >  The Stop and quarantine action has a maximum timeout period of 3 days. If the targeted device remains offline for longer than this period after the action is initiated, the action will not be delivered to that device. To ensure the file remains blocked beyond the timeout or after the action completes, it's recommended to create an indicator to block the file explicitly.
 
 2. Go to the top bar and select **Stop and Quarantine File**.