update dht prefix

config.json

@@ -23,5 +23,5 @@
   "transformers_version": "4.31.0",
   "use_cache": true,
   "vocab_size": 32000,
-  "dht_prefix": "StableDiffusion2-hf"
+  "dht_prefix": "StableBeluga2-hf"
 }