Correct the number of compounds

[AnneCarpenter]

From the corresponding Jamali et al paper (https://www.biorxiv.org/content/10.1101/2023.02.15.528711v2.full): "JUMP-MOA plate layout enables testing of 90 compounds from 47 distinct MOA classes and each compound has 4 replicate wells"

[shntnu]

Thank you!