Replace old generation_config.json with latest.

The old generation_config.json does not specify <|eot_id|> as the stop token. This makes the model incapable of stopping when running it using transformers, which leads to low scores on the leaderboard V2.0 evaluation. (More info here: https://huggingface.co/spaces/open-llm-leaderboard/open_llm_leaderboard/discussions/815 )

generation_config.json

@@ -1,6 +1,9 @@
 {
-  "_from_model_config": true,
   "bos_token_id": 128000,
-  "eos_token_id": 128001,
-  "transformers_version": "4.40.2"
+  "eos_token_id": [128001, 128009],
+  "do_sample": true,
+  "temperature": 0.6,
+  "max_length": 4096,
+  "top_p": 0.9,
+  "transformers_version": "4.40.0.dev0"
 }