Fixed url for totto data

totto.py

@@ -17,7 +17,7 @@ ToTTo is an open-domain English table-to-text dataset with over 120,000 training
 
 _URLs = {
     "totto": {
-        "data": "https://storage.googleapis.com/huggingface-nlp/totto/totto_data.zip",
+        "data": "https://storage.googleapis.com/huggingface-nlp/datasets/totto/totto_data.zip",
         "challenge_set": "https://storage.googleapis.com/huggingface-nlp/datasets/gem/gem_challenge_sets/totto.zip",
     },
 }