Documentation could use more examples

[manuelmoreale]

Issue with Reference
I'm using a random method as an example but this can be applied more broadly to the documentation. https://getkirby.com/docs/reference/objects/image/image/rename

Most methods are currently quite barebones and could really benefit from a working example on how that specific method could be used.

Expected
A short code example showcasing how the specific method or functionality works.