part 4 (designer) instruction is out of date

Hi,
the instruction related to part 4 the designer is completely out of date:
- name of the product has changed to "designer"
- screenshots are not valid. The UI has completely changes
- the example, sample 3 does not exit in the list of choice

https://github.com/danielsc/azureml-workshop-2019/blob/master/1-workspace-concepts/4-designer.md