Add Practical Python Course & MongoDB Cheat Sheet (#5639)

* Added Practical Python: An Immersive Python Course

* Added MongoDB Cheat Sheet

* Ordered Alphabetically

courses/free-courses-en.md

@@ -658,6 +658,7 @@
 * [Learn Python Tutorial](https://www.kaggle.com/learn/python) (Kaggle)
 * [Learn to program in Python](https://www.codecademy.com/learn/python)
 * [Learn to Program: The Fundamentals](https://www.coursera.org/learn/learn-to-program) (Coursera)
+* [Practical Python: An Immersive Python Course](https://practical.learnpython.dev) - Nina Zakharenko
 * [Practical Python Programming](https://dabeaz-course.github.io/practical-python/) - David Beazley
 * [Programming Foundations with Python](https://www.udacity.com/course/programming-foundations-with-python--ud036) (Udacity)
 * [Python 3](https://www.sololearn.com/Course/Python/) (SoloLearn)

more/free-programming-cheatsheets.md

@@ -131,6 +131,7 @@
 
 ### MongoDB
 
+* [MongoDB Cheat Sheet](https://www.mongodb.com/developer/quickstart/cheat-sheet) - MongoDB (HTML)
 * [Quick Cheat Sheet for Mongo DB Shell commands](https://gist.github.com/michaeltreat/d3bdc989b54cff969df86484e091fd0c) - Michael Treat's Quick Cheat Sheet