Update index.md (#23772)
Update index.md (#23772)

* Update index.md

Changed shortened Amazon link

* fix: removed referral links and shorten urls

* Update index.md

raisedadead/FreeCodeCamp,BhaveshSGupta/FreeCodeCamp,raisedadead/FreeCodeCamp,FreeCodeCamp/FreeCodeCamp,FreeCodeCamp/FreeCodeCamp,jonathanihm/freeCodeCamp,BhaveshSGupta/FreeCodeCamp,BhaveshSGupta/FreeCodeCamp,jonathanihm/freeCodeCamp