Add GEO source dataset link

README.md

@@ -20,7 +20,7 @@ end-to-end checks with
 
 ## Dataset contents
 
-Derived from a public type 1 diabetes scRNA-seq study (GSE148073). Preprocessed
+Derived from a public type 1 diabetes scRNA-seq study ([GSE148073](https://www.ncbi.nlm.nih.gov/geo/query/acc.cgi?acc=GSE148073)). Preprocessed
 into the model's input format as a minimal working example.
 
 | Split | Patients | Rows |