Update functions-app-settings.md

Added note that app setting WEBSITE_CONTENTOVERVNET is only truly required when using app setting WEBSITE_CONTENTAZUREFILECONNECTIONSTRING

Author: ffarinha-msft

articles/azure-functions/functions-app-settings.md

@@ -614,7 +614,7 @@ Azure Files doesn't support using managed identity when accessing the file share
 
 ## WEBSITE\_CONTENTOVERVNET
 
-A value of `1` enables your function app to scale when you have your storage account restricted to a virtual network. You should enable this setting when restricting your storage account to a virtual network. To learn more, see [Restrict your storage account to a virtual network](configure-networking-how-to.md#restrict-your-storage-account-to-a-virtual-network).
+A value of `1` enables your function app to scale when you have your storage account restricted to a virtual network. You should enable this setting when restricting your storage account to a virtual network. Only required when using `WEBSITE_CONTENTAZUREFILECONNECTIONSTRING`. To learn more, see [Restrict your storage account to a virtual network](configure-networking-how-to.md#restrict-your-storage-account-to-a-virtual-network).
 
 |Key|Sample value|
 |---|------------|