Change mednext size from S to L

Author: donglaiw

tutorials/neuron_nisb/base_banis.yaml

@@ -24,7 +24,7 @@ default:
       - function: WeightedBCEWithLogitsLoss
         weight: 1.0
     mednext:
-      size: S
+      size: L
       kernel_size: 3
       dim: 3d
       checkpoint_style: outside_block