Added freeCodeCamp courses (#6340)

* Added freeCodeCamp courses

Added courses of HTML, CSS and Javascript

* Update free-courses-en.md

* Update free-courses-en.md

* Update free-programming-interactive-tutorials-en.md

* Update free-programming-interactive-tutorials-en.md

* Update courses/free-courses-en.md

Co-authored-by: David Ordás <3125580+davorpa@users.noreply.github.com>

* Update more/free-programming-interactive-tutorials-en.md

Co-authored-by: David Ordás <3125580+davorpa@users.noreply.github.com>

* Update more/free-programming-interactive-tutorials-en.md

Co-authored-by: David Ordás <3125580+davorpa@users.noreply.github.com>

* Update more/free-programming-interactive-tutorials-en.md

Co-authored-by: David Ordás <3125580+davorpa@users.noreply.github.com>

* Update more/free-programming-interactive-tutorials-en.md

Co-authored-by: David Ordás <3125580+davorpa@users.noreply.github.com>

* Update more/free-programming-interactive-tutorials-en.md

Co-authored-by: David Ordás <3125580+davorpa@users.noreply.github.com>

* Update more/free-programming-interactive-tutorials-en.md

Co-authored-by: David Ordás <3125580+davorpa@users.noreply.github.com>

* Update more/free-programming-interactive-tutorials-en.md

Co-authored-by: David Ordás <3125580+davorpa@users.noreply.github.com>

* Update more/free-programming-interactive-tutorials-en.md

Co-authored-by: David Ordás <3125580+davorpa@users.noreply.github.com>

* Use each course url instead of its track from belongs to

Co-authored-by: David Ordás <3125580+davorpa@users.noreply.github.com>

more/free-programming-interactive-tutorials-en.md

@@ -23,6 +23,7 @@
   * [AngularJS](#angularjs)
   * [jQuery](#jquery)
   * [React](#react)
+  * [Redux](#redux)
 * [Kotlin](#kotlin)
 * [Language Agnostic](#language-agnostic)
   * [Operating Systems](#operating-systems)
@@ -162,7 +163,6 @@
 * [Flex Box Adventure](https://codingfantasy.com/games/flexboxadventure) - Nick Bull
 * [Flexbox Defense](http://flexboxdefense.com)
 * [Flexbox Froggy](http://flexboxfroggy.com)
-* [FreeCodeCamp: Responsive Web Design Course](https://www.freecodecamp.org/learn/responsive-web-design/basic-html-and-html5/)
 * [Grid Attack](https://codingfantasy.com/games/css-grid-attack) - Nick Bull
 * [Grid Garden](https://cssgridgarden.com)
 * [HTML Tutorial](https://www.w3schools.com/html/) - W3Schools
@@ -171,13 +171,14 @@
 * [Learn CSS: an evergreen CSS course and reference to level up your styling expertise](https://web.dev/learn/css/) - Andy Bell, Rachel Andrew, Una Kravets, Adam Argyle, Rob Dodson, Jiwoong Lee et al. (web.dev)
 * [Learn HTML & CSS interactively](https://www.codecademy.com/learn/web)
 * [Prototyping a professional website](https://www.codecademy.com/learn/make-a-website)
+* [Responsive Web Design Certification](https://www.freecodecamp.org/learn/responsive-web-design/) - freeCodeCamp
 
 
 #### Bootstrap
 
 * [Bootstrap 5 Tutorial](https://www.w3schools.com/bootstrap5/) - W3Schools
 * [Bootstrap Tutorial](https://www.tutlane.com/tutorial/bootstrap) - tutlane
-* [Front End Libraries: Bootstrap](https://www.freecodecamp.org/learn/front-end-libraries/bootstrap)
+* [Front End Development Libraries Certification: Bootstrap](https://www.freecodecamp.org/learn/front-end-libraries/bootstrap) - freeCodeCamp
 
 
 ### Java
@@ -195,7 +196,7 @@
 * [Codecademy jquery track](https://www.codecademy.com/learn/jquery)
 * [ES6 Interactive Guide](http://stack.formidable.com/es6-interactive-guide/#/)
 * [Functional Programming in Javascript](https://github.com/ReactiveX/learnrx)
-* [JavaScript Algorithms and Data Structures Certification](https://www.freecodecamp.org/learn/javascript-algorithms-and-data-structures/basic-javascript)
+* [JavaScript Algorithms and Data Structures Certification](https://www.freecodecamp.org/learn/javascript-algorithms-and-data-structures/) - freeCodeCamp
 * [Javascript interactive tutorial on CodeCademy](https://www.codecademy.com/learn/javascript)
 * [JavaScript interactive tutorial on CoderMania](http://www.codermania.com/javascript/lesson/1a/hello-world)
 * [JavaScript Tutorial](https://www.w3schools.com/js) - W3Schools
@@ -219,17 +220,22 @@
 
 #### jQuery
 
-* [Front End Libraries: jQuery](https://www.freecodecamp.org/learn/front-end-libraries/jquery)
+* [Front End Development Libraries Certification: jQuery](https://www.freecodecamp.org/learn/front-end-libraries/jquery) - freeCodeCamp
 * [jQuery Tutorial](https://www.w3schools.com/jquery/) - W3Schools
 
 
 #### React
 
-* [Front End Libraries: React](https://www.freecodecamp.org/learn/front-end-libraries/react)
+* [Front End Development Libraries Certification: React](https://www.freecodecamp.org/learn/front-end-libraries/react) - freeCodeCamp
 * [React Tutorial](https://react-tutorial.app)
 * [React Tutorial](https://www.w3schools.com/react/) - W3Schools
 
 
+#### Redux
+
+* [Front End Development Libraries: Redux](https://www.freecodecamp.org/learn/front-end-development-libraries/redux) - freeCodeCamp
+
+
 ### Kotlin
 
 * [Kotlin tutorial](https://kotlinlang.org/docs/tutorials/)
@@ -305,6 +311,7 @@
 ### Python
 
 * [Codecademy Python course](https://www.codecademy.com/learn/python)
+* [Data Analysis with Python Certification](https://www.freecodecamp.org/learn/data-analysis-with-python/) - freeCodeCamp
 * [How to Think Like a Computer Scientist: Learning with Python, Interactive Edition](http://interactivepython.org/courselib/static/thinkcspy/index.html)
 * [Learn Python](http://www.learnpython.org)
 * [Learn Python Step by Step](http://www.techbeamers.com/python-tutorial-step-by-step)
@@ -314,6 +321,7 @@
 * [Python Programming Language](https://www.geeksforgeeks.org/python-programming-language/) - GeeksforGeeks
 * [Python Tutorial](https://www.tutlane.com/tutorial/python) - tutlane
 * [Python Tutorial](https://www.w3schools.com/python) - W3Schools
+* [Scientific Computing with Python Certification](https://www.freecodecamp.org/learn/scientific-computing-with-python/) - freeCodeCamp
 
 
 ### R