fix: set attributes to config

ornithoscope.py

@@ -45,6 +45,9 @@ class OrnithoscopeConfig(datasets.BuilderConfig):
         """
         super().__init__(version=datasets.Version("1.0.0"), **kwargs)
         self.classes = classes
+        self.train_json = train_json
+        self.validation_json = validation_json
+        self.test_json = test_json
 
 
 class Ornithoscope(datasets.GeneratorBasedBuilder):