Fix test

Author: jackzhxng

examples/models/llama/export_llama_lib.py

@@ -863,7 +863,7 @@ def _load_llama_model(
 
     return LLMEdgeManager(
         model=model,
-        modelname=modelname,
+        modelname=modelclass,
         max_seq_len=model.params.max_seq_len,
         dtype=dtype,
         use_kv_cache=use_kv_cache,