update(config): use `qk_layerorm` field for consistency with `transformers`

config.json

@@ -24,7 +24,7 @@
   "transformers_version": "4.39.0.dev0",
   "use_cache": true,
   "use_parallel_residual": true,
-  "use_qk_layernorm": true,
+  "qk_layernorm": true,
   "use_qkv_bias": false,
   "vocab_size": 50304
 }