Update chat_template

tokenizer_config.json

@@ -47,6 +47,7 @@
   "tokenizer_class": "LlamaTokenizer",
   "trust_remote_code": false,
   "unk_token": "<unk>",
-  "use_default_system_prompt": true,
+  "use_default_system_prompt": false,
+  "chat_template": "{% if not add_generation_prompt is defined %}{% set add_generation_prompt = false %}{% endif %}{% for message in messages %}{{'<|im_start|>' + message['role'] + '\n' + message['content'] + '<|im_end|>' + '\n'}}{% endfor %}{% if add_generation_prompt %}{{ '<|im_start|>assistant\n' }}{% endif %}",
   "use_fast": true
 }