update loader script

binding_affinity.py

@@ -92,6 +92,7 @@ class BindingAffinity(datasets.ArrowBasedBuilder):
                 "seq": datasets.Value("string"),
                 "smiles": datasets.Value("string"),
                 "neg_log10_affinity_M": datasets.Value("float"),
+                "affinity": datasets.Value("float"),
                 # These are the features of your dataset like images, labels ...
             }
         )