Include RiboVision into expert_database.py
Include RiboVision into expert_database.py

I forgot to add examples before so the site broke and we commented out
this database. This adds the examples back and hopefully keeps things
working.

RNAcentral/rnacentral-webcode,RNAcentral/rnacentral-webcode,RNAcentral/rnacentral-webcode,RNAcentral/rnacentral-webcode