Add Keys with Examples (#32942)
Add Keys with Examples (#32942)

* Add Keys with Examples

* fix: added front matter block

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