Fix missing { on dataset.features

NIH-Chest-X-ray-dataset.py

@@ -115,6 +115,7 @@ class ChestXray14(datasets.GeneratorBasedBuilder):
 	def _info(self):
 		if self.config.name == "image-cllassification":
 		    features = datasets.Features(
+                       {
 		        "image": datasets.Image(),
   		        "labels": datasets.features.Sequence(
                                      datasets.features.ClassLabel(
@@ -122,6 +123,7 @@ class ChestXray14(datasets.GeneratorBasedBuilder):
                                         names=_NAMES
                                      )
                                  )
+                       }
                     )
 		    keys = ("image", "labels")