Missing dependencies for browser usage in docs

[willy2dg]

In the installation section for browser should be included/mentioned the required dependecies ( version is important since floating-ui dom and core are breaking changes updated )

Here the unpkg links

<script src="https://unpkg.com/@floating-ui/[email protected]"></script>
<script src="https://unpkg.com/@floating-ui/[email protected]"></script>

Maybe floating-vue link needs to be updated too since doesn't point the beta.16