Update disk limits for clarity

Clarified the disk limits for protected disks, specifying the limit for Trusted VMs.

Author: AkshitGureja

articles/site-recovery/azure-to-azure-support-matrix.md

@@ -395,7 +395,7 @@ Data disk: Standard storage account | Supported. |
 Data disk: Premium storage account | Supported. | If a VM has disks spread across Premium and Standard storage accounts, you can select a different target storage account for each disk to ensure that you have the same storage configuration in the target region.
 Managed disk: Standard | Supported in Azure regions in which Site Recovery is supported. |
 Managed disk: Premium | Supported in Azure regions in which Site Recovery is supported. |
-Disk subscription limits | Up to 3,000 protected disks per subscription. | Ensure that the source or target subscription doesn't have more than 3,000 Site Recovery-protected disks (both data and OS).
+Disk subscription limits | Up to 3,000 (1,200 in case of Trusted VMs) protected disks per subscription. | Ensure that the source or target subscription doesn't have more than 3,000 (1,200 in case of Trusted VMs) Site Recovery-protected disks (both data and OS).
 Standard SSD | Supported. |
 Redundancy | Locally redundant storage (LRS), ZRS, and geo-redundant storage (GRS) are supported.
 Cool and hot storage | Not supported. | VM disks aren't supported on cool or hot storage.