Use content-type header in templates

Signed-off-by: itowlson <ivan.towlson@fermyon.com>

Author: itowlson

templates/http-js/content/src/index.js

@@ -2,7 +2,7 @@ export async function handleRequest(request) {
 
  return {
  status: 200,
- headers: { "foo": "bar" },
+ headers: { "content-type": "text/plain" },
  body: "Hello from JS-SDK"
  }
 }

templates/http-ts/content/src/index.ts

@@ -3,7 +3,7 @@ import { HandleRequest, HttpRequest, HttpResponse } from "@fermyon/spin-sdk"
 export const handleRequest: HandleRequest = async function (request: HttpRequest): Promise<HttpResponse> {
  return {
  status: 200,
- headers: { "foo": "bar" },
+ headers: { "content-type": "text/plain" },
  body: "Hello from TS-SDK"
  }
 }