Fix nova:install npm command

Author: alies-dev

package.json

@@ -11,7 +11,7 @@
         "hot": "mix watch --hot",
         "prod": "npm run production",
         "production": "mix --production",
-        "nova:install": "npm --prefix='../../vendor/laravel/nova' ci"
+        "nova:install": "npm --prefix='./vendor/laravel/nova' ci"
     },
     "devDependencies": {
         "@vue/compiler-sfc": "^3.2.41",