Update README.md

README.md

@@ -201,7 +201,7 @@ python -m executorch.examples.models.phi_4_mini.convert_weights pytorch_model.bi
 ```
 
 Once the checkpoint is converted, we can export to ExecuTorch's pte format with the XNNPACK delegate.
-The below command exports with a max_seq_length/max_context_length of 128, which is the default value.
+The below command exports with a max_seq_length/max_context_length of 128, the default value, but it can be changed as desired.
 
 ```Shell
 PARAMS="executorch/examples/models/phi_4_mini/config.json"