docs(plugins): Add Svelte Loader HMR link (#3229)

Author: ChristianEdwardPadilla

src/content/guides/hot-module-replacement.md

@@ -341,5 +341,6 @@ There are many other loaders and examples out in the community to make HMR inter
 - [Vue Loader](https://github.com/vuejs/vue-loader): This loader supports HMR for vue components out of the box.
 - [Elm Hot webpack Loader](https://github.com/klazuka/elm-hot-webpack-loader): Supports HMR for the Elm programming language.
 - [Angular HMR](https://github.com/gdi2290/angular-hmr): No loader necessary! A simple change to your main NgModule file is all that's required to have full control over the HMR APIs.
+- [Svelte Loader](https://github.com/sveltejs/svelte-loader): This loader supports HMR for Svelte components out of the box.
 
 T> If you know of any other loaders or plugins that help with or enhance Hot Module Replacement please submit a pull request to add to this list!