Added in on good v. bad comments (#29942)
Added in on good v. bad comments (#29942)

Added paragraph about best commenting practices in the introduction and relevant FreeCodeCamp link in the More Information section.
raisedadead/FreeCodeCamp,BhaveshSGupta/FreeCodeCamp,BhaveshSGupta/FreeCodeCamp,raisedadead/FreeCodeCamp,BhaveshSGupta/FreeCodeCamp,jonathanihm/freeCodeCamp,jonathanihm/freeCodeCamp,FreeCodeCamp/FreeCodeCamp,FreeCodeCamp/FreeCodeCamp