Fix Discrete Mathematics by Shai Simonson playlist broken link

📝 Update the intro to be in sync with HEAD

General Interview questions guide added

Added link to a guide of general interview questions and their sample answer, for those who are not able to come up with good answers

New Resources Added To Challenge Sites

The added resource is a platform to practice coding and progress with the coding skills online.

Fix typo

Fix details tags [Spanish translation]

<details> tags at the bottom of the file, at "Translations" and "Translations in progress".

[Docs] In Progress: translating in urdu

Modify broken link in table of content 

Update Korean.md

changed : 
1. some ## subjects, 
2. Addtional Learning - B-Trees, 
3. Additional Detail on Some Subjects -> introduction paragraph

Added information related to ATS Resume

Nitpick: Github -> GitHub

 Updated Resume Section and added information about ATS Complaint Resume.

Added Assembly Language Cheat Sheet

Add Codeforces under Language-learning sites

update forked version

fix invalid titles in README-ja.md.