* Add GNU Emacs refcard to more/free-programming-cheatsheets.md file under ide/editors category

* Add alphabetical order and PDF indication for the adding emacs refcard

* Added PDF indication

* Add HackThisSite in CTF and corrected address spelling

* Removed slash from the end of the URL

* Add resources and categories to Hindi courses

* Added spaces and alphabetical order

* Fixed alphabetical order

* Fixed broken TOC anchors