Update config.yaml

Author: codelion

examples/llm_prompt_optimization/config.yaml

@@ -14,9 +14,7 @@ llm:
   api_base: "https://generativelanguage.googleapis.com/v1beta/openai/"
   models:
     - name: "gemini-2.5-flash-lite"  # Using Gemini 2.5 Flash Lite
-      weight: 0.9
-    - name: "gemini-2.5-flash"  # Using Gemini 2.5 Flash
-      weight: 0.1
+      weight: 1.0
 
   temperature: 0.4  # Optimal from experiments
   max_tokens: 16000  # Optimal context