Update attn_temperature_tuning

https://huggingface.slack.com/archives/C01N44FJDHT/p1773741769897869?thread_ts=1773669282.282689&cid=C01N44FJDHT

config.json

@@ -12,7 +12,7 @@
     "attention_chunk_size": 8192,
     "attention_dropout": 0.0,
     "attn_scale": 0.1,
-    "attn_temperature_tuning": 4,
+    "attn_temperature_tuning": true,
     "bos_token_id": 200000,
     "eos_token_id": [
       200001,