fixed headers

Author: saminacodes

apps/portal/src/app/nebula/plugins/openAI/page.mdx

@@ -1,4 +1,6 @@
-# Chat Completions API
+# OpenAI
+
+### Chat Completions API
 
 Compatible with OpenAI’s Chat Completion API to process chat history and generate context-aware responses.
 
@@ -12,14 +14,14 @@ client = OpenAI(
 chat_completion = client.chat.completions.create(
 	model="t0",
 	messages=[{"role": "user", "content": "Hello Nebula!"}],
-	stream=False,
+	stream=False,git
     extra_body={ "context": { "wallet_address": "0x..." }}
 )
 
 print(chat_completion)
 ```
 
-**Models API**
+### Models API
 
 Compatible with OpenAI’s Models API to list out models used.