Video link under Article heading

[suraj-sella]

As attached, under 1. Call Stack, the last pointer is a video and should be moved to the Videos section rather than being in the Articles section.

[suraj-sella]

I just observed that there is already a list item in the videos which is the same. Hence, this article is a repetitive one and can be removed.

[denisknk]

Opened pull request for this issue
#499