docs: update components README plugin name and link

[RuSenLi]

update plguin name and link.

I'm happy to submit pr if needed.
https://github.com/antfu-collective/vitesse-webext/blob/main/src/components/README.md?plain=1

[vite-plugin-components](https://github.com/antfu/vite-plugin-components) to [unplugin-vue-components](https://github.com/unplugin/unplugin-vue-components)

[vite-plugin-icons](https://github.com/antfu/vite-plugin-icons) to [unplugin-icons](https://github.com/unplugin/unplugin-icons)

[tmkx]

PR welcome :)