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>

courses/free-courses-fa_IR.md

@@ -5,18 +5,18 @@
 * [Git](#git)
 * [Java](#java)
 * [JavaScript](#javascript)
-  * [React](#react)
+    * [React](#react)
 * [Kotlin](#kotlin)
 * [Linux](#linux)
 * [Machine Learning](#machine-learning)
 * [Network](#network)
 * [PHP](#php)
-  * [Codeigniter](#codeigniter)
-  * [Laravel](#laravel)
-  * [Yii](#yii)
+    * [Codeigniter](#codeigniter)
+    * [Laravel](#laravel)
+    * [Yii](#yii)
 * [Python](#python)
-  * [Django](#django)
-  * [Flask](#flask)
+    * [Django](#django)
+    * [Flask](#flask)
 * [Web Development](#web-development)
 
 
@@ -127,7 +127,7 @@
 
 ### Flask
 
-* [ آموزش توسعه وب با فریم‌ورک فلسک](https://www.youtube.com/playlist?list=PLdUn5H7OTUk1WYCrDJpNGpJ2GFWd7yZaw) - Alireza Ayinmehr
+* [آموزش توسعه وب با فریم‌ورک فلسک](https://www.youtube.com/playlist?list=PLdUn5H7OTUk1WYCrDJpNGpJ2GFWd7yZaw) - Alireza Ayinmehr
 
 
 ### Web Development
@@ -135,6 +135,6 @@
 * [آموزش اینسپکت المنت](https://holosen.net/inspect-element-1/) - Hossein Badrnezhad
 * [آموزش طراحی وب](https://www.youtube.com/playlist?list=PLF10DSJQktjlCvLNuyxNjMPIHThHuIVqG) - Siavash Mahmoudian
 * [برنامه نویسی وب](https://maktabkhooneh.org/course/%D8%A8%D8%B1%D9%86%D8%A7%D9%85%D9%87-%D9%86%D9%88%DB%8C%D8%B3%DB%8C-%D9%88%D8%A8-mk74) - Mohammad Salehe
-* [برنامه نویسی وب با HTML و CSS](https://holosen.net/web-design/) - Hossein Badrnezhad *(نیاز به ثبت نام دارد)* 
+* [برنامه نویسی وب با HTML و CSS](https://holosen.net/web-design/) - Hossein Badrnezhad *(نیاز به ثبت نام دارد)*
 * [دوره اموزشی بوت استرپ 5](https://www.youtube.com/playlist?list=PLAt10Vana3YciJv9EIcNSsm1yTGpOdJIp) - Mehran Tarif (Silicium)
 * [وب‌فریم‌ورک‌ها چگونه کار می‌کنند؟](https://www.youtube.com/playlist?list=PLRU2zoAmuzJ33x-___WkhyTJ8dDPaoOPk) - Shahriar Shariati