Update Speech transcription methods notebook to clarify audio file usage and introduce WebSocket connection details for the Realtime API.

Author: minh-hoque

examples/Speech_transcription_methods.ipynb

@@ -13,7 +13,9 @@
     "\n",
     "By the end you will be able to select and use the appropriate transcription method for your use use cases.\n",
     "\n",
-    "*Note: For simplicity and ease of use, this notebook uses WAV audio files. Real-time microphone streaming (e.g., from web apps or microphones) is not utilized.*"
+    "*Note:*\n",
+    "- *This notebook uses WAV audio files for simplicity. It does **not** demonstrate real-time microphone streaming (such as from a web app or direct mic input).*\n",
+    "- *This notebook uses WebSockets to connect to the Realtime API. Alternatively, you can use WebRTC, see the [OpenAI docs](https://platform.openai.com/docs/guides/realtime#connect-with-webrtc) for details.*"
    ]
   },
   {