minor change to code format in package.json (ts nestjs server) (#22397)

Author: wing328

modules/openapi-generator/src/main/resources/typescript-nestjs-server/package.mustache

@@ -11,12 +11,13 @@
     "reflect-metadata": "^0.2.2",
     "rxjs": "^{{rxjsVersion}}"
   },
+  {{#npmRepository}}
+  "publishConfig": {
+    "registry": "{{{npmRepository}}}"
+  },
+  {{/npmRepository}}
   "devDependencies": {
     "@types/node": "^{{nodeVersion}}",
     "typescript": "^{{{tsVersion}}}"
-    }{{#npmRepository}},
-"publishConfig": {
-"registry": "{{{npmRepository}}}"
+  }
 }
-{{/npmRepository}}
-}