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
2024-06-18 22:05:07 +09:00 · 2024-06-18 22:05:07 +09:00 · a2deeeba72
commit a2deeeba72
parent 24d7a3c7dc
1 changed files with 1 additions and 1 deletions
--- a/packages/next/package.json
+++ b/packages/next/package.json
@ -339,7 +339,7 @@
    "server",
    "node",
    "front-end",
-    "back-end",
+    "backend",
    "cli",
    "vercel"
  ],