[core] Apply prettier to other files too

nest-cli.json

@@ -2,8 +2,6 @@
   "collection": "@nestjs/schematics",
   "sourceRoot": "src",
   "compilerOptions": {
-    "plugins": [
-      "@nestjs/swagger"
-    ]
+    "plugins": ["@nestjs/swagger"]
   }
 }