message: fix Go SDK codegen for engagementfabric
diff: @@ -22,5 +22,5 @@ These settings apply only when `--tag=package-2018-09-preview --go` is specified
  Please also specify `--go-sdk-folder=<path to the root directory of your azure-sdk-for-go clone>`.
  ``` yaml $(tag) == 'package-2018-09-preview' && $(go)
  -output-folder: $(go-sdk-folder)/services/preview/$(namespace)/mgmt/2018-09-preview/$(namespace)
  +output-folder: $(go-sdk-folder)/services/preview/$(namespace)/mgmt/2018-09-01/$(namespace)
  ```
  