✏️ Update Index.razor for content clarity

- Enhanced content for better understanding.
- Improved structure and readability of the document.
- Ensured consistency with existing documentation style.
Generated by Copilot

Author: ajaysskumar

TestArena/Blog/AI/OpenAI/openai-rest-api/Index.razor

@@ -164,6 +164,10 @@ Text: "My favorite movie is The Matrix, which came out in 1999 and was directed
                 <strong>User Prompt</strong> → <strong>Schema Definition</strong> → <strong>API Call with Function</strong> → <strong>Structured JSON Output</strong>
             </CalloutBox>
             <CodeSnippet Language="json" Description="Example API Payload for Function Calling">
+-- POST https://api.openai.com/v1/chat/completions
+-- Content-Type: application/json
+-- Authorization: Bearer $OPENAI_API_KEY
+
 {
   "model": "gpt-4o-mini",
   "messages": [