Update doc for lammps.

Author: shyuep

pyproject.toml

@@ -190,7 +190,7 @@ module = ["requests.*", "tabulate.*"]
 ignore_missing_imports = true
 
 [[tool.mypy.overrides]]
-module = ["matgl.kernels.*", "matgl.ext.jax.*", "matgl.ext._lammps"]
+module = ["matgl.kernels.*", "matgl.ext.jax.*", "matgl.ext.lammps"]
 ignore_errors = true
 # ``register_buffer`` returns ``Tensor | Module`` in mypy's view; indexing,
 # iterating, or attribute-accessing those triggers spurious errors.

src/matgl/cli.py

@@ -215,7 +215,7 @@ def create_lammps_model(args: argparse.Namespace) -> int:
     """
     # Lazy import keeps the CLI responsive when this subcommand isn't used and
     # avoids dragging the export-only deps onto the import path.
-    from matgl.ext._lammps import LAMMPSMatGLModel
+    from matgl.ext.lammps import LAMMPSMatGLModel
 
     dtype_map = {"float32": torch.float32, "float64": torch.float64}
     dtype = dtype_map[args.dtype]