Update LOG_TRIM explanation

Author: KaminariOS

.env.example

@@ -41,4 +41,5 @@ GROQ_API_KEY=your_groq_api_key_here
 OPENROUTER_MODEL=openai/gpt-4o-mini
 
 # Set it to a positive integer(window size in lines) to trim log blocks that only differ in timestamps. This saves input tokens and reduces context length.
+# For example, if LOG_TRIM=2, the code will compare every 1 line, and then every 2 lines for duplication.
 LOG_TRIM=0