Update api-playground/overview.mdx

Author: mintlify[bot]

api-playground/overview.mdx

@@ -14,6 +14,8 @@ The API playground is an interactive environment that lets users test and explor
 
 The playground is automatically generated from your OpenAPI specification or AsyncAPI schema so any updates to your API are automatically reflected in the playground. You can also manually create API reference pages after defining a base URL and authentication method in your `docs.json`.
 
+The playground supports rich media responses including images, audio, and video content. When your API returns media content types, the playground automatically renders them inline for immediate preview.
+
 We recommend generating your API playground from an OpenAPI specification. See [OpenAPI Setup](/api-playground/openapi-setup) for more information on creating your OpenAPI document.
 
 ## Getting started