randomkey method is not implemented, but is not in the list of unimplemented commands

Relevant code:

https://github.com/jamesls/fakeredis/blob/master/fakeredis.py#L356

Relevant documentation:

https://github.com/jamesls/fakeredis#unimplemented-commands

There's a discrepancy here. Would it be better to implement the `randomkey` method, or just add it to the list of unimplemented commands?
