docs: add comment in create project guide (#16321)

docs/guide/index.md

@@ -87,6 +87,8 @@ bun create vite my-vue-app --template vue
 
 See [create-vite](https://github.com/vitejs/vite/tree/main/packages/create-vite) for more details on each supported template: `vanilla`, `vanilla-ts`, `vue`, `vue-ts`, `react`, `react-ts`, `react-swc`, `react-swc-ts`, `preact`, `preact-ts`, `lit`, `lit-ts`, `svelte`, `svelte-ts`, `solid`, `solid-ts`, `qwik`, `qwik-ts`.
 
+You can use `.` for the project name to scaffold in the current directory.
+
 ## Community Templates
 
 create-vite is a tool to quickly start a project from a basic template for popular frameworks. Check out Awesome Vite for [community maintained templates](https://github.com/vitejs/awesome-vite#templates) that include other tools or target different frameworks.