add spaces

Author: spirosbax

README.md

@@ -1,4 +1,4 @@
-# Exercises and projects
-https://www.w3resource.com/python-exercises/
-https://knightlab.northwestern.edu/2014/06/05/five-mini-programming-projects-for-the-python-beginner/
-https://projecteuler.net/
+# Exercises and projects  
+https://www.w3resource.com/python-exercises/  
+https://knightlab.northwestern.edu/2014/06/05/five-mini-programming-projects-for-the-python-beginner/  
+https://projecteuler.net/