Update free-courses-en.md (#6778)

* Update free-courses-en.md

Angular 5 course added

* Add Introduction to Assembly with ARM

course added

* Alphabetize to solve linter faults and fix Udemy typo

* fix instructor name typo

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

courses/free-courses-en.md

@@ -189,6 +189,7 @@
 
 * [Binary Exploitation / Memory Corruption by LiveOverflow](https://www.youtube.com/playlist?list=PLhixgUqwRTjxglIswKp9mpkfPNfHkzyeN) - LiveOverflow (YouTube)
 * [C Programming and Assembly Language](https://nptel.ac.in/courses/106/106/106106210/) - Prof. Janakiraman Viraraghavan, IIT Madras (NPTEL)
+* [Introduction to Assembly Programming with ARM](https://www.udemy.com/course/introduction-to-assembly-programming-with-arm/) - Scott Cosentino (Udemy)
 * [Introduction To Reverse Engineering Software](http://opensecuritytraining.info/IntroductionToReverseEngineering.html) - Matt Briggs (OpenSecurityTraining)
 * [Introductory Intel x86: Architecture, Assembly, Applications, & Alliteration](http://opensecuritytraining.info/IntroX86.html) - Xeno Kovah (OpenSecurityTraining)
 
@@ -987,6 +988,7 @@
 * [Angular Fast Crash Course](https://www.udemy.com/angular-fast-crash-course/) - Edwin Diaz, Coding Faculty Solutions (Udemy)
 * [Angular for Beginners](https://www.udemy.com/course/angular-for-beginners-course/) - Angular University (Udemy)
 * [Angular Tutorial For Beginners](https://www.youtube.com/playlist?list=PLC3y8-rFHvwhBRAgFinJR8KHIrCdTkZcZ) - Codevolution (YouTube)
+* [Learn Angular 5 from Scratch](https://www.udemy.com/course/angular-5/) - Gary Simon (Udemy)
 
 
 #### Deno