fix: homogenize markdown across files using markdownlint rules (#6988)

* chore: homogenize C# table of content anchor (`#c-sharp` to `#csharp`)

* format: homogenize c# category title

right markdown escape instead of use HTML entities

* lint: fix `MD012/no-multiple-blanks` rule

Multiple consecutive blank lines [Expected: 2; Actual: 3]

* lint: fix `MD039/no-space-in-links`

Spaces inside link text

* lint: fix `MD009/no-trailing-spaces` rule

Trailing spaces [Expected: 0 or 4; Actual: 1]
Trailing spaces [Expected: 0 or 4; Actual: 2]

* lint: fix `MD006/ul-start-left` rule

* format: remove extra spaces between note tokens

* spell: fix lint `MD044/proper-names` rule

- HTML
- JavaScript
- YouTube

* spell: normalize to the most common `Index` heading

* lint: fix `MD007/ul-indent` rule

Unordered list indentation [Expected: 4; Actual: 2]

* format: escape pipes `|` from resources text

addresses #5176

* add Hesham Asem courses about machine and deep learning and nlp

* Expand the name of nlp section

* Change the order

* Revert "spell: normalize to the most common `Index` heading"

This reverts commit 4d6a74e7d7.

Co-authored-by: AhmedElTabarani <eltabaraniahmed@gmail.com>

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

@@ -17,16 +17,16 @@
 * [Go](#go)
 * [Haskell](#haskell)
 * [HTML and CSS](#html-and-css)
-  * [Bootstrap](#bootstrap)
+    * [Bootstrap](#bootstrap)
 * [Java](#java)
 * [JavaScript](#javascript)
-  * [AngularJS](#angularjs)
-  * [jQuery](#jquery)
-  * [React](#react)
-  * [Redux](#redux)
+    * [AngularJS](#angularjs)
+    * [jQuery](#jquery)
+    * [React](#react)
+    * [Redux](#redux)
 * [Kotlin](#kotlin)
 * [Language Agnostic](#language-agnostic)
-  * [Operating Systems](#operating-systems)
+    * [Operating Systems](#operating-systems)
 * [LaTeX](#latex)
 * [Lisp](#lisp)
 * [MATLAB](#matlab)
@@ -202,7 +202,7 @@
 * [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/) - freeCodeCamp
-* [Javascript interactive tutorial on CodeCademy](https://www.codecademy.com/learn/javascript)
+* [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
 * [JavaScript Tutorial](https://www.scaler.com/topics/javascript/) - Scaler Topics