I'm using the default hello world code on serverless: "{
"input": {
"prompt": "Hello World"
}
}" but getting a completion-style response instead of an instruct-style response, despite using Llama instruct. To clarify, the response I'm getting is: "! Welcome to my blog about London: the Great City!...". How do I change the prompt format to get instruct-style responses? Where can I find the syntax?