Update snapshot-to-blob.sh example.

Missing `exit 2`

Author: Phil-Jensen

articles/azure-netapp-files/azacsnap-cmd-ref-runbefore-runafter.md

@@ -5,7 +5,7 @@ services: azure-netapp-files
 author: Phil-Jensen
 ms.service: azure-netapp-files
 ms.topic: reference
-ms.date: 02/20/2025
+ms.date: 08/20/2025
 ms.author: phjensen
 # Customer intent: "As a cloud administrator, I want to use the runbefore and runafter capabilities of the Application Consistent Snapshot tool, so that I can automate command execution for backup and restoration processes with Azure NetApp Files."
 ---
@@ -105,6 +105,7 @@ if [ -r "${SAS_KEY_FILE}" ]; then
   source "${SAS_KEY_FILE}"
 else
   echo "Credential file '${SAS_KEY_FILE}' not found, exiting!"
+  exit 2
 fi