docs: update link

Author: promer94

README.md

@@ -33,7 +33,7 @@ yarn watch
 
 ## Video Tutorial
 
-1. [Introduction](https://youtu.be/OtEH0LX5C6M)
+1. [Introduction](https://youtu.be/rGkFI0Z-i-c)
 2. [Matrix](https://youtu.be/ctJejZ7Nldg)
 3. [GPU acceleration](https://youtu.be/OtEH0LX5C6M)