changes as per PR review comment on #260

Author: altxtech

docs/_core_features/chat.md

@@ -154,7 +154,7 @@ You can also analyze video files or URLs with vision-capable models. RubyLLM wil
 
 ```ruby
 # Ask about a local video file
-chat = RubyLLM.chat(model: 'gemini-2.0-flash')
+chat = RubyLLM.chat(model: 'gemini-2.5-flash')
 response = chat.ask "What happens in this video?", with: "path/to/demo.mp4"
 puts response.content
 

docs/index.md

@@ -95,14 +95,14 @@ RubyLLM gives you one beautiful API for all of them. Same interface whether you'
 
 ```ruby
 # Just ask questions
-chat = RubyLLM.chat(model: "gemini-2.0-flash")
+chat = RubyLLM.chat
 chat.ask "What's the best way to learn Ruby?"
 ```
 
 ```ruby
 # Analyze any file type
 chat.ask "What's in this image?", with: "ruby_conf.jpg"
-chat.ask "What's happening in this video?", with: "presentation.mp4"
+chat.ask "What's happening in this video?", with: "video.mp4"
 chat.ask "Describe this meeting", with: "meeting.wav"
 chat.ask "Summarize this document", with: "contract.pdf"
 chat.ask "Explain this code", with: "app.rb"