Re-adding NSX-T documentation link

Signed-Off-By: Anusha Hegde <[email protected]>

Author: anusha94

README.md

@@ -224,7 +224,7 @@ $ python samples/vsphere/vcenter/vm/list_vms.py -v
 
 
 ### NSX API Documentation
-
+* [NSX-T Data Center](https://docs.vmware.com/en/VMware-NSX-T-Data-Center/index.html)
 * [NSX Manager APIs](https://vmware.github.io/vsphere-automation-sdk-python/nsx/nsx/index.html) - API for managing NSX-T cluster and transport nodes for on-prem customers
 * [NSX Policy](https://vmware.github.io/vsphere-automation-sdk-python/nsx/nsx_policy/index.html) - primary API for managing logical networks for on-prem customers
 * [NSX VMC Policy](https://vmware.github.io/vsphere-automation-sdk-python/nsx/nsx_vmc_policy/index.html) - primary API for managing logical networks for VMC customers