Fix open parenthesis

CC6204-Hackaton-Cub-Dataset.py

@@ -22,7 +22,7 @@ _URLS = {
 
 # Create id-to-label dictionary using the classes file
 _ID2LABEL = {}
-with open(_URLS["classes", "r") as f:
+with open(_URLS["classes"], "r") as f:
   for row in f.read().rsplit("\n"):
     if row != '':
       idx, label = row.split(" ")