Update CHANGELOG for singular datasources

Author: alexng-canuck

CHANGELOG.md

@@ -6,6 +6,7 @@
 - Support for offline resizing of Boot Volume
 - Support for tagging of Boot Volume
 - Support for NAT Gateways
+- Support for singular data sources that can query individual Volumes, Subnets, and Instances
 - Fields "assigned_entity_id" and "assigned_entity_type" have been added to Public IPs to allow you to distinguish Public IPs of the NAT Gateway.
 
 ### Fixed

website/docs/d/core_instance.html.markdown

@@ -50,7 +50,8 @@ The following attributes are exported:
 	If you do not specify the fault domain, the system selects one for you. To change the fault domain for an instance, terminate it and launch a new instance in the preferred fault domain.
 
 	Example: `FAULT-DOMAIN-1` 
-* `freeform_tags` - Free-form tags for this resource. Each tag is a simple key-value pair with no predefined name, type, or namespace. For more information, see [Resource Tags](https://docs.us-phoenix-1.oraclecloud.com/Content/General/Concepts/resourcetags.htm).  Example: `{"Department": "Finance"}` 
+* `freeform_tags` - Free-form tags for this resource. Each tag is a simple key-value pair with no predefined name, type, or namespace. For more information, see [Resource Tags](https://docs.us-phoenix-1.oraclecloud.com/Content/General/Concepts/resourcetags.htm).  Example: `{"Department": "Finance"}`
+* `hostname_label` - The hostname for the instance VNIC's primary private IP. 
 * `id` - The OCID of the instance.
 * `image` - Deprecated. Use `sourceDetails` instead. 
 * `ipxe_script` - When a bare metal or virtual machine instance boots, the iPXE firmware that runs on the instance is configured to run an iPXE script to continue the boot process.