chore: update response type from json to js

Author: psanders

README.md

@@ -50,7 +50,7 @@ npm run start:eventsServer
 
 If your `eventsHook` is set you will receive events from Fonoster including the chat history which will look like this:
 
-```json
+```js
 {
   eventType: 'conversation.ended',
   chatHistory: [
@@ -109,4 +109,4 @@ Overall Passed: ✔
 │ 3    │ No, that's all.            │ Thank you for your time.   │ Thank you so much, bye!    │ hangup()   │ ✔      │
 │      │                            │ Have a great day!          │                            │            │        │
 └──────┴────────────────────────────┴────────────────────────────┴────────────────────────────┴────────────┴────────┘
-```
+```