Update Update-AzSynapseSqlVulnerabilityAssessmentSetting.md (#18181)

-BlobStorageSasUri - when using storage with firewall enabled this parameter is required for the PowerShell command to succeed.

Author: charithcaldera

src/Synapse/Synapse/help/Update-AzSynapseSqlVulnerabilityAssessmentSetting.md

@@ -62,6 +62,9 @@ Update-AzSynapseSqlVulnerabilityAssessmentSetting -ResourceId <String> -BlobStor
 The **Update-AzSynapseSqlVulnerabilityAssessmentSetting** cmdlet updates the vulnerability assessment settings of an Azure Synapse Analytics workspace.
 Before updates the settings, you need to enable the Azure defender for SQL.
 
+> [!IMPORTANT]
+> If the virtual networks and the firewall enabled for the storage account, "-BlobStorageSasUri" parameter is required to update the vulnerability assessment settings. 
+
 ## EXAMPLES
 
 ### Example 1