Update tokenizer_config.json (#2)

- Update tokenizer_config.json (01ec25d2655f6e21316f8fa99b116ea3125ffa2c)


Co-authored-by: Tiezhen WANG <xianbao@users.noreply.huggingface.co>

tokenizer_config.json

@@ -4,6 +4,6 @@
   "clean_up_tokenization_spaces": true,
   "eos_token": "<EOT>",
   "model_max_length": 200000,
-  "tokenizer_class": "ClaudeTokenizer",
+  "tokenizer_class": "GPT2TokenizerFast",
   "unk_token": "<EOT>"
 }