Update README.md

README.md

@@ -39,5 +39,6 @@ size_categories:
 - 1K<n<10K
 ---
 
-Link to article: (https://arxiv.org/abs/2005.06588)[https://arxiv.org/abs/2005.06588]
-Downloaded data from (farsbase.net)[http://farsbase.net/PERLEX.html]
+Link to article: [https://arxiv.org/abs/2005.06588](https://arxiv.org/abs/2005.06588)
+
+Downloaded data from [farsbase.net](http://farsbase.net/PERLEX.html)