message: Fix storage Python conf
diff: @@ -324,8 +324,8 @@ Please also specify `--python-sdks-folder=<path to the root directory of your az
  ``` yaml $(tag) == 'package-2018-03' && $(python)
  python:
  - namespace: azure.mgmt.storage.v2018_03_01
  - output-folder: $(python-sdks-folder)/azure-mgmt-storage/azure/mgmt/storage/v2018_03_01
  + namespace: azure.mgmt.storage.v2018_03_01_preview
  + output-folder: $(python-sdks-folder)/azure-mgmt-storage/azure/mgmt/storage/v2018_03_01_preview
  ```
  ### Tag: package-2018-02 and python
  