Update README.md

The call stack explained

Author: Dkeys4

README.md

@@ -122,6 +122,7 @@ All the translations for this repo will be listed below:
 -  [Understanding Execution Context and Execution Stack in Javascript — Sukhjinder Arora](https://blog.bitsrc.io/understanding-execution-context-and-execution-stack-in-javascript-1c9ea8642dd0)
 -  [How JavaScript Works: An Overview of the Engine, the Runtime, and the Call Stack — Alexander Zlatkov](https://blog.sessionstack.com/how-does-javascript-actually-work-part-1-b0bacc073cf)
 -  [How JavaScript Works Under The Hood: An Overview of JavaScript Engine, Heap and, Call Stack — Bipin Rajbhar](https://dev.to/bipinrajbhar/how-javascript-works-under-the-hood-an-overview-of-javascript-engine-heap-and-call-stack-1j5o)
+-  [The JS Call stack Explained in 9 minutes](https://www.youtube.com/watch?v=W8AeMrVtFLY) - Colt Steel (YouTube)
 
 ### <img  align= center width=50px height=50px src="https://camo.githubusercontent.com/bbbcc076f47d621aeab7bc4a6d8b3cfa2e13b78bda9dd0dcd97c64ebe5b0b64c/68747470733a2f2f696d672e67656e69616c2e6c792f3566393136303830363461643939306336656531323233372f62643731393561332d613862622d343934622d386136642d6166343864643464656234622e6769663f67656e69616c2631363433353837323030303633"> Videos