## Description

This updates the documentation for `MediaQuery` and `Overlay` to include the following:

- That `MediaQueryData.size` is set asynchronously, and doesn't necessarily reflect the size of the current frame.
- That the specific `MediaQuery.sizeOf` and related methods are preferred over the more generic `MediaQuery.of`.
- That the size of the `Overlay` isn't necessarily the size returned by `MediaQueryData.size`

As well as adding some symbol links, and fixing some error in documentation.

## Tests
 - Documentation only