Update app.py

app.py

@@ -591,7 +591,7 @@ This dashboard combines two powerful learning optimization approaches:
 - **Preset Parameters**: These are pre-calibrated values based on research data that define the underlying models
   - FSRS Model Parameters: Define the mathematical model for spaced repetition intervals
   - Multimodal Weights: Define the effectiveness of different learning modalities
-  - **Those preset parameters are for user personal learning patterns, since all of them are customized parameters, I leave default values here for now.**
+  - **Those preset parameters are for user personal learning patterns, since all of them are customized parameters, I leave default values here for now. But it  allows manual adjustment for simultion.**
   
 - **Customizable Settings**: These are parameters you can adjust based on your specific learning scenario
   - Learning Period & Time: How long and how much time per day you plan to study