Update sample OpenAI config (for gpt-5) misleading users into using max_response_tokens & remove openai-o1.yml sample config

No need to have both sample configs now.

Fixes https://github.com/etkecc/baibot/issues/57

docs/sample-provider-configs/openai-o1.yml

@@ -1,24 +0,0 @@
-base_url: https://api.openai.com/v1
-api_key: YOUR_API_KEY_HERE
-text_generation:
-  model_id: o1-mini
-  # o1 models do not support a system prompt
-  prompt: null
-  temperature: 1.0
-  # o1 models do not support max_response_tokens.
-  # They use `max_completion_tokens` as an alternative
-  max_response_tokens: null
-  max_completion_tokens: 16384
-  max_context_tokens: 128000
-speech_to_text:
-  model_id: whisper-1
-text_to_speech:
-  model_id: tts-1-hd
-  voice: onyx
-  speed: 1.0
-  response_format: opus
-image_generation:
-  model_id: gpt-image-1
-  style: null
-  size: null
-  quality: null

docs/sample-provider-configs/openai.yml

@@ -4,8 +4,11 @@ text_generation:
   model_id: gpt-5
   prompt: "You are a brief, but helpful bot called {{ baibot_name }} powered by the {{ baibot_model_id }} model. The date/time of this conversation's start is: {{ baibot_conversation_start_time_utc }}."
   temperature: 1.0
-  max_response_tokens: 16384
-  max_context_tokens: 128000
+  # Reasoning models need to use `max_completion_tokens` instead of `max_response_tokens`.
+  # If you're dealing with a non-reasoning model, specify `max_response_tokens` and unset `max_completion_tokens`.
+  max_response_tokens: null
+  max_completion_tokens: 128000
+  max_context_tokens: 400000
 speech_to_text:
   model_id: whisper-1
 text_to_speech: