Fix missing blank line

free-courses-en.md

@@ -184,6 +184,7 @@
 * [Learn to program in Python](https://www.codecademy.com/learn/python)
 * [Programming for Everybody](https://www.coursera.org/learn/python)
 
+
 ### R
 
 * [R Programming](https://www.coursera.org/course/rprog)