Update README.md

Update the training epoch in README for this model.

README.md

@@ -121,7 +121,7 @@ See the [data card](https://huggingface.co/datasets/imagenet-1k) for additional
 
 * Parameters: 12.3 M
 * GMACs: 1.3
-* Train. Epochs: 1000
+* Train. Epochs: 300
 
 Trained on a cluster with NVIDIA A100 and V100 GPUs.