Update templates.mdx (#3930)

add a svelte templage

website/versioned_docs/version-v2.9.0/community/templates.mdx

@@ -53,6 +53,7 @@ If you are unsure about a template, inspect `package.json` and `wails.json` for
 - [wails-vite-svelte-tailwind-template](https://github.com/BillBuilt/wails-vite-svelte-tailwind-template) - A template using Svelte and Vite with TailwindCSS v3
 - [wails-svelte-tailwind-vite-template](https://github.com/PylotLight/wails-vite-svelte-tailwind-template/tree/master) - An updated template using Svelte v4.2.0 and Vite with TailwindCSS v3.3.3
 - [wails-sveltekit-template](https://github.com/h8gi/wails-sveltekit-template) - A template using SvelteKit
+- [wails-template-shadcn-svelte](https://github.com/xijaja/wails-template-shadcn-svelte) - A template using Sveltekit and Shadcn-Svelte
 
 ## Solid