Update shared-image-galleries.md

features and security type supported

Author: sandeepraichura

articles/virtual-machines/shared-image-galleries.md

@@ -63,7 +63,9 @@ Image definitions contain metadata for the image to allow grouping of images tha
 - Minimum and maximum vCPU and memory recommendations - if your image has vCPU and memory recommendations, you can attach that information to your image definition.
 - Disallowed disk types - you can provide information about the storage needs for your VM. For example, if the image isn't suited for standard HDD disks, you add them to the disallow list.
 - Purchase plan information for Marketplace images - `-PurchasePlanPublisher`, `-PurchasePlanName`, and `-PurchasePlanProduct`. For more information about purchase plan information, see [Find images in the Azure Marketplace](./windows/cli-ps-findimage.md) and [Supply Azure Marketplace purchase plan information when creating images](marketplace-images.md).
-- Features are features that are supported, based on the type of gallery:
+- Architecture
+  - x64 or ARM64 [Architecture](/cli/azure/sig/image-definition?&branch=main#az-sig-image-definition-create)
+- Features are additional features and SecurityType(s) that are supported on the image, based on the type of gallery:
 
    | Features | Accepted Values | Definition | Supported in |
    |--|--|--|--|
@@ -72,9 +74,6 @@ Image definitions contain metadata for the image to allow grouping of images tha
    | DiskControllerType | ["SCSI", "NVMe"], ["SCSI"] | Set this to use either SCSI or NVMe disk type. NVMe VMs and disks can only be captured in image definitions that are tagged to be supporting NVMe. | Private, direct shared, community |
 
 
--Architecture
- - x64 or ARM64 [Architecture](/cli/azure/sig/image-definition?&branch=main#az-sig-image-definition-create)
-
 - SecurityType determines the security features that are enabled on the VM. Some types limited, based on the type of gallery that they are stored in:
 
    | Accepted Values | Definition | Supported in |