Update index.md (#25370)
Update index.md (#25370)

Added a line to the detailed commit messages section on the importance of making sure your commit messages explain what changed fro ease of roll-back
BhaveshSGupta/FreeCodeCamp,raisedadead/FreeCodeCamp,BhaveshSGupta/FreeCodeCamp,FreeCodeCamp/FreeCodeCamp,BhaveshSGupta/FreeCodeCamp,FreeCodeCamp/FreeCodeCamp,jonathanihm/freeCodeCamp,raisedadead/FreeCodeCamp,jonathanihm/freeCodeCamp