message: Deployment Manager: fix java namespace error
diff: @@ -193,8 +193,8 @@ Please also specify `--azure-libraries-for-java=<path to the root directory of y
  ``` yaml $(tag) == 'package-2019-11-01-preview' && $(java) && $(multiapi)
  java:
  - namespace: com.microsoft.azure.management.deploymentmanager.v2019-11-01-preview
  - output-folder: $(azure-libraries-for-java-folder)/sdk/deploymentmanager/mgmt-v2019-11-01-preview
  + namespace: com.microsoft.azure.management.deploymentmanager.v2019_11_01_preview
  + output-folder: $(azure-libraries-for-java-folder)/sdk/deploymentmanager/mgmt-v2019_11_01_preview
  regenerate-manager: true
  generate-interface: true
  ```
  