Fix qwen import typo (#9535)

Author: jackzhxng

examples/models/qwen2_5/__init__.py

@@ -1,7 +1,7 @@
 # This source code is licensed under the BSD-style license found in the
 # LICENSE file in the root directory of this source tree.
 
-from executorch.example.models.llama.model import Llama2Model
+from executorch.examples.models.llama.model import Llama2Model
 
 
 class Qwen2_5Model(Llama2Model):