refine pytorch resnet README document
Step-by-Step
============
-This document is used to list steps of reproducing PyTorch ResNet50/ResNet18/ResNet101 iLiT tuning zoo result.
+This document describes the step-by-step instructions for reproducing PyTorch ResNet50/ResNet18/ResNet101 tuning results with iLiT.
> **Note**
>
@@ -28,7 +28,7 @@ This document is used to list steps of reproducing PyTorch ResNet50/ResNet18/Res
### 2. Prepare Dataset
- Download ImageNet Raw image to work dir, naming as /path/to/imagenet.
+ Download [ImageNet](http://www.image-net.org/) Raw image to dir: /path/to/imagenet.
# Run
