next.js

a2deeeba - refactor(next): package.json keywords `back-end` should be `backend` (#66974)

refactor(next): package.json keywords `back-end` should be `backend` (#66974) ### Why? Following of #64173, keyword `back-end` was `backend` https://github.com/vercel/next.js/assets/120007119/644fe2fb-3db4-4b47-9070-7c504987bdc2