Move example agent output into a collapsible section

README.md

@@ -117,7 +117,12 @@ async for result in agent.run(messages):
             print(item["content"][0]["text"])
 ```
 
-### Output format (OpenAI Agent Responses Format):
+### Output format
+
+Cua uses the OpenAI Agent response format.
+
+<details>
+<summary>Example</summary>
 
 ```json
 {
@@ -172,6 +177,8 @@ async for result in agent.run(messages):
 }
 ```
 
+</details>
+
 # Computer ([Docs](https://docs.trycua.com/docs/computer-sdk/computers))
 
 ```bash