updates for README

Author: unpingco

README.md

@@ -1,4 +1,4 @@
-Jupyter/IPython Notebooks for Springer book [Python for Probability, Statistics, and Machine Learning](https://www.springer.com/fr/book/9783319307152)
+Jupyter Notebooks for Springer book [Python for Probability, Statistics, and Machine Learning](https://www.springer.com/fr/book/9783319307152)
 
 ![Draft cover](./python_for_probability_statistics_and_machine_learning.jpg)
 

chapters/machine_learning/notebooks/README.md

@@ -12,10 +12,7 @@ be some code in the src-statistics directory that may be useful. This
 directory contains author drafts that were usually migrated into the
 main text. This material may be useful on that basis.
 
-Please open an Issue here
-
-   https://github.com/unpingco/Python-for-Probability-Statistics-and-Machine-Learning/issues
-
+Please open an [Issue](https://github.com/unpingco/Python-for-Probability-Statistics-and-Machine-Learning/issues)
 if you have problems or need more information.
 
 -Jose