New content generator will set invalid detection types

[linuxdaemon]

https://github.com/splunk/contentctl/blob/e63ed1f073c7c453451ebd99f19c566389a4ebfd/contentctl/input/new_content_questions.py#L23-L30 and https://github.com/splunk/contentctl/blob/e63ed1f073c7c453451ebd99f19c566389a4ebfd/contentctl/objects/enums.py#L4-L8 are inconsistent, which means it will let you set the detection type to, for instance, Investigation which will fail validation since it is not in the enum