Is your feature request related to a problem or challenge? Please describe what you are trying to do.
This is a follow up to apache/arrow#48668. Current documentation for min and max compute functions lack code examples.

Describe the solution you'd like
I'd like to add code examples if you think it could be useful. I also noticed that some other functions lack code examples as well. I could work on those too, maybe separately.

Additional context
https://docs.rs/arrow/latest/arrow/compute/fn.min.html
https://docs.rs/arrow/latest/arrow/compute/fn.max.html