Add missing custom model protocol name

[sammygutierrez]

Setting the modelProtocol option in the template.yml will file will not update the name of an extension

[yonaskolb]

Thanks @sammygutierrez. Could you please add a change long entry as well? Don’t worry about too much about what section it goes into, it can be cleaned up later

[sammygutierrez]

@yonaskolb Updated!