update readme

Author: siyangimda

README.md

@@ -2,7 +2,7 @@
 
 Refer to the documentation below for a curated list of data science techniques:
 
-current link: https://mapattacker.github.io/datascience/
-old defunct site: http://python-data-science.readthedocs.io
+ * current link: https://mapattacker.github.io/datascience/
+ * old defunct site: http://python-data-science.readthedocs.io
 
 ![](https://github.com/mapattacker/datascience/blob/master/images/intro.png?raw=true)