Update README.md

README.md

@@ -2,14 +2,15 @@
 license: mit
 ---
 The ImageNet-A dataset contains 7,500 natural adversarial examples.
-Source: https://github.com/hendrycks/natural-adv-examples
+
+Source: https://github.com/hendrycks/natural-adv-examples.  
 Also see the ImageNet-C and ImageNet-P datasets at https://github.com/hendrycks/robustness
 
-@article{hendrycks2019nae,
-  title={Natural Adversarial Examples},
-  author={Dan Hendrycks and Kevin Zhao and Steven Basart and Jacob Steinhardt and Dawn Song},
-  journal={arXiv preprint arXiv:1907.07174},
-  year={2019}
+@article{hendrycks2019nae,  
+  title={Natural Adversarial Examples},  
+  author={Dan Hendrycks and Kevin Zhao and Steven Basart and Jacob Steinhardt and Dawn Song},  
+  journal={arXiv preprint arXiv:1907.07174},  
+  year={2019}  
 }
 
 There are 200 classes we consider. The WordNet ID and a description of each class is as follows.