update model_max_length to 2048

Model max length was "model_max_length": 1000000000000000019884624838656,
changed to 2048

tokenizer_config.json

@@ -2,7 +2,7 @@
   "add_prefix_space": false,
   "bos_token": "<|endoftext|>",
   "eos_token": "<|endoftext|>",
-  "model_max_length": 1000000000000000019884624838656,
+  "model_max_length": 2048,
   "name_or_path": "EleutherAI/pythia-6.9b",
   "special_tokens_map_file": "/admin/home-hailey/.cache/huggingface/hub/models--EleutherAI--gpt-neox-20b/snapshots/4e49eadb5d14bd22f314ec3f45b69a87b88c7691/special_tokens_map.json",
   "tokenizer_class": "GPTNeoXTokenizer",