Vite configuration page could be a bit clearer

[aaronshenhao]

Page of interest: https://v2.tauri.app/start/frontend/vite/

Here's a list of things that could make it more helpful to beginners:

• Clarify where tauri.conf.json is located (not mentioned beforehand).
• Clarify what dist/ does. Shouldn't it be ../dist, which is already present in the auto-generated code from npm create tauri-app@latest?
• The package.json file in the doc differs from the auto-generated code (React + Typescript).
• Same goes for the vite.config.js. Are we meant to use the auto-generated code or the one in the docs? The one in the docs do not have TypeScript support or HMR, but the generated code has less support for debugging. Also, it might be useful to explain that the environment variables are set automatically by Tauri.
• Additional instructions for Docker users: if TAURI_DEV_HOST is not set, set host: true so it can listen to connections from outside the container, otherwise npm run dev won't work.