Update openai.mdx

Author: dannyroosevelt

docs-v2/pages/connect/mcp/openai.mdx

@@ -14,6 +14,8 @@ Pipedream Connect includes built-in user authentication for [every MCP server](h
 
 OpenAI provides an API playground for developers to test prompts and tool calling, which provides an easy way to test Pipedream MCP. Get started below.
 
+![OpenAI API Playground](https://res.cloudinary.com/pipedreamin/image/upload/v1748549832/CleanShot_2025-05-29_at_13.09.23_4_2x_yujxkt.png)
+
 <Steps>
 
 #### Open the playground