Add in Generative AI to the "What is Machine Learning good at?" section

[MikeTrizna]

The current version of the episode (https://github.com/carpentries-incubator/machine-learning-librarians-archivists/blob/e51b3327aa1ae9a4fb470ab751ac31af477bc02c/_episodes/04-what-is-ml-good-at.md) does not include any mentions of Generative AI. We need to add that in here -- in the context of Tasks (as mentioned in Issue #87 )