Update README.md

Large-DiT/README.md

@@ -3,7 +3,7 @@
 We release the ***Large Diffusion Transformer*** (**L-DiT-3B** & **L-DiT-7B** 🔥), inspired by the methodologies of [LLaMA](https://github.com/facebookresearch/llama) and [DiT](https://github.com/facebookresearch/DiT). 
 
 ![image](./assets/sample_t2i.png)
-![image](./assets/sample2.jpg)
+![image](./assets/sample.png)
 
 
 Compared to DiT-XL/2, our L-DiT-7B:
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 ### ImageNet 256x256 Samples and Benchmark
 
 <div>
-  <img src="./assets/sample.png"/ width="57%">  <img src="./assets/table.png"/ width="37%"> <br>
+  <img src="./assets/sample.png"/ width="62%">  <img src="./assets/table.png"/ width="32%"> <br>
 </div>