📝 🐛 fix link to webpack academy (#2960)

src/v2/guide/single-file-components.md

@@ -70,4 +70,4 @@ After you've taken a day to dive into these resources, we recommend checking out
 
 The CLI takes care of most of the tooling configurations for you, but also allows fine-grained customization through its own [config options](https://cli.vuejs.org/config/).
 
-In case you prefer setting up your own build setup from scratch, you will need to manually configure webpack with [vue-loader](https://vue-loader.vuejs.org). To learn more about webpack itself, check out [their official docs](https://webpack.js.org/configuration/) and [Webpack Academy](https://webpack.academy/p/the-core-concepts).
+In case you prefer setting up your own build setup from scratch, you will need to manually configure webpack with [vue-loader](https://vue-loader.vuejs.org). To learn more about webpack itself, check out [their official docs](https://webpack.js.org/configuration/) and [Webpack Academy](https://webpack-academy.teachable.com/p/the-core-concepts).