Update README.md

README.md

@@ -77,7 +77,7 @@ results = model.train(
   mosaic=1.0,
   mixup=0.0,  # S:0.05; M:0.15; L:0.15; X:0.2
   copy_paste=0.1,  # S:0.15; M:0.4; L:0.5; X:0.6
-  device="0,1,2,3,4,5,6,7",
+  device="0,1,2,3",
 )
 
 # Evaluate model performance on the validation set