Fix smollm2 wiring: point at SmolLM2 v2 repo and config

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Co-authored-by: kirklandsign <107070759+kirklandsign@users.noreply.github.com>

Author: Copilot

examples/models/llama/export_llama_lib.py

@@ -123,7 +123,7 @@
     "qwen2_5_1_5b": "Qwen/Qwen2.5-1.5B",
     "qwen2_5_coder_32b": "Qwen/Qwen2.5-Coder-32B-Instruct",
     "phi_4_mini": "microsoft/Phi-4-mini-instruct",
-    "smollm2": "HuggingFaceTB/SmolLM-135M",
+    "smollm2": "HuggingFaceTB/SmolLM2-135M",
     "qwen3_0_6b": "Qwen/Qwen3-0.6B",
     "qwen3_1_7b": "Qwen/Qwen3-1.7B",
     "qwen3_4b": "Qwen/Qwen3-4B",

examples/models/smollm2/135M_config.json

@@ -6,7 +6,7 @@
     "n_kv_heads": 3,
     "n_layers": 30,
     "norm_eps": 1e-05,
-    "rope_theta": 10000.0,
+    "rope_theta": 100000.0,
     "use_scaled_rope": false,
     "vocab_size": 49152,
     "use_hf_rope": false,