added ADF applicability

Author: shanhix1

articles/governance/policy/concepts/policy-applicability.md

@@ -47,18 +47,21 @@ The applicability of `AuditIfNotExists` and `DeployIfNotExists` policies is base
 
 The applicability of `Microsoft.Kubernetes.Data` policies is based off the entire `if` condition of the policy rule. When the `if` evaluates to false, the policy isn't applicable.
 
-### Microsoft.KeyVault.Data
+### Microsoft.KeyVault.Data, Microsoft.ManagedHSM.Data, Microsoft.DataFactory.Data
 
-Policies with mode `Microsoft.KeyVault.Data` are applicable if the `type` condition of the policy rule evaluates to true. The `type` refers to component type, such as:
+Policies with mode `Microsoft.KeyVault.Data` are applicable if the `type` condition of the policy rule evaluates to true. The `type` refers to component type.
+
+Key Vault component types:
 - Microsoft.KeyVault.Data/vaults/certificates
 - Microsoft.KeyVault.Data/vaults/keys
 - Microsoft.KeyVault.Data/vaults/secrets
 
-### Microsoft.ManagedHSM.Data
-
-Policies with mode `Microsoft.ManagedHSM.Data` are applicable if the `type` condition of the policy rule evaluates to true. The `type` refers to component type: 
+Managed HSM component type:
 - Microsoft.ManagedHSM.Data/managedHsms/keys
 
+Azure Data Factory component type:
+- Microsoft.DataFactory.Data/factories/outboundTraffic
+
 ### Microsoft.Network.Data
 
 Policies with mode `Microsoft.Network.Data` are applicable if the `type` and `name` conditions of the policy rule evaluate to true. The `type` refers to  component type: