updated README.

README.md

@@ -19,10 +19,10 @@ model-index:
           link: https://www.kaggle.com/datasets/mateuszbuda/lgg-mri-segmentation
         metrics:
           - type: dice
-            value: 0.843
+            value: 0.77
             name: Dice Coefficient
           - type: iou
-            value: 0.609
+            value: 0.62
             name: Intersection over Union (IoU)
 ---
 
@@ -81,8 +81,8 @@ print("Output shape:", output.shape)
 
 ### Performance on test set
 
-- **Dice Coefficient:** 0.843
-- **Intersection over Union (IoU):** 0.609
+- **Dice Coefficient:** 0.77
+- **Intersection over Union (IoU):** 0.62
 
 ## Citation