docs: set `homepage` to vuejs.org (#14709)

`repository.url` and `bugs.url` already point to the repo. Since Vue has a homepage, point to it.

packages/vue/package.json

@@ -93,7 +93,7 @@
   "bugs": {
     "url": "https://github.com/vuejs/core/issues"
   },
-  "homepage": "https://github.com/vuejs/core/tree/main/packages/vue#readme",
+  "homepage": "https://vuejs.org/",
   "dependencies": {
     "@vue/shared": "workspace:*",
     "@vue/compiler-dom": "workspace:*",