Use collapsed section for JSON response

Author: bkoelman

README.md

@@ -105,6 +105,9 @@ The following steps describe how to create a JSON:API project.
    GET http://localhost:5000/people?filter=equals(firstName,'John')&include=children HTTP/1.1
    ```
 
+   <details>
+   <summary>Expand to view the JSON response</summary>
+
    ```json
    {
      "links": {
@@ -166,6 +169,8 @@ The following steps describe how to create a JSON:API project.
    }
    ```
 
+</details>
+
 ## Learn more
 
 The following links explain what this project provides, why it exists, and how you can use it.