message: Update the default tag for LUIS Runtime
diff: Configuration for generating LUIS Runtime SDK.
  ``` yaml
  -tag: runtime_2_0
  +tag: runtime_3_0_preview
  add-credentials: true
  openapi-type: data-plane
  ```
  -The current release for the Runtime Endpoint is `runtime_2_0`.
  +The current release for the Runtime Endpoint is `runtime_3_0_preview`.
  # Releases
  @@ -54,7 +54,7 @@ swagger-to-sdk:
  - repo: azure-sdk-for-node
  ```
  -### Runtime 2.0 - CSharp Settings
  +### CSharp
  These settings apply only when `--csharp` is specified on the command line.
  ``` yaml $(csharp)
  csharp:
  