Update tokenizer_config.json

Configuring bos, eos, pad and unk tokens helps load the tokenizer successfully, otherwise getting a recursion error "RecursionError: maximum recursion depth exceeded while getting the str of an object."

tokenizer_config.json

@@ -1,9 +1,10 @@
 {
-  "bos_token": "",
-  "eos_token": "",
+  "bos_token": "</s>",
+  "eos_token": "</s>",
   "model_max_length": 512,
   "padding_side": "right",
   "special_tokens_map_file": "/sc-projects/sc-proj-cc06-medbert/hfcache/hub/models--decapoda-research--llama-13b-hf/snapshots/438770a656712a5072229b62256521845d4de5ce/special_tokens_map.json",
   "tokenizer_class": "LlamaTokenizer",
-  "unk_token": ""
-}
+  "unk_token": "</s>",
+  "pad_token": "[PAD]"
+}