Update tokenizer_config.json (#2)

- Update tokenizer_config.json (f13342a42636efc1ef7d2ee0970e57be06006263)


Co-authored-by: Joao Gante <joaogante@users.noreply.huggingface.co>

tokenizer_config.json

@@ -17,7 +17,7 @@
   "pad_token": "<pad>",
   "sep_token": "</s>",
   "special_tokens_map_file": null,
-  "tokenizer_class": "RobertaTokenizer",
+  "tokenizer_class": "GPT2Tokenizer",
   "trim_offsets": true,
   "unk_token": "<unk>"
 }