Add extract to zip data.

tiny_coco.py

@@ -50,7 +50,7 @@ class TinyCoco(datasets.GeneratorBasedBuilder):
         )
 
     def _split_generators(self, dl_manager):
-        data_dir = dl_manager.download(_URLS[self.config.name])
+        data_dir = dl_manager.download_and_extract(_URLS[self.config.name])
         meta = dl_manager.download(_URLS[self.config.name + '_meta'])
         return [
             datasets.SplitGenerator(