Clarify citation guidelines

[ErinWeisbart]

(Originally added by Shantanu here)

There are conflicting guidelines on how to cite this resource

Our guidelines:

All the data is released with CC0 1.0 Universal (CC0 1.0). Still, professional ethics require that you cite the appropriate resources/publications, listed below, when using individual datasets. For example,

We used the dataset cpg0000 (Chandrasekaran et al., 2022), available from the Cell Painting Gallery on the Registry of Open Data on AWS (https://registry.opendata.aws/cellpainting-gallery/).
RODA's guidelines:

From the "How to Cite" section:

Cell Painting Gallery was accessed on DATE from https://registry.opendata.aws/cellpainting-gallery.

From the License section:

License: CC0 1.0 Universal (CC0 1.0) Public Domain Dedication, but please do cite the corresponding publication for each dataset, as listed here.