chore: set repo url

Author: OrbisK

stubs/vitest-environment-nuxt/package.json

@@ -3,6 +3,11 @@
   "name": "vitest-environment-nuxt",
   "version": "2.0.0",
   "license": "MIT",
+  "repository": {
+    "type": "git",
+    "url": "git+https://github.com/nuxt/test-utils.git",
+    "directory": "stubs/vitest-environment-nuxt"
+  },
   "exports": {
     ".": "./index.mjs",
     "./utils": "./utils.mjs"