For this sentence:
Azure Digital Twins uses DTDL version 2.
Add link to the DTDL v2 spec for 'version 2'.
---
#### Document Details
⚠ *Do not edit this section. It is required for docs.mi…
## The Basics
* Responsible service team: Azure Digital Twins
* Link to documentation describing the service:
https://github.com/Azure/azure-digital-twins/blob/private-preview/Documentation/overv…