Incorrect intermediate_size

This fixes the model for `llama.cpp` at least, untested on `transformers`.

config.json

@@ -9,7 +9,7 @@
   "hidden_act": "silu",
   "hidden_size": 3584,
   "initializer_range": 0.02,
-  "intermediate_size": 18944,
+  "intermediate_size": 20480,
   "max_position_embeddings": 131072,
   "max_window_layers": 28,
   "model_type": "qwen2_moe",