Update all tutorials for new UI

[shielddz]

Tutorials: https://developers.sap.com/tutorials/cai-bot-shipping-3-price-parcel.html

In step 7, "1- Add New Message Group" should be "Add New Action Group"

[thecodester]

The UI is constantly changing so we will have a complete review of all the SAP Conversational AI tutorials at some point this year to update them as best we can. I will keep this issue here as a reminder.