chore: docstring 2

src/py/mat3ra/made/tools/build/grain_boundary/__init__.py

@@ -10,6 +10,15 @@ def create_grain_boundary(
     configuration: GrainBoundaryConfiguration,
     builder: Optional[GrainBoundaryBuilder] = None,
 ) -> Material:
+    """
+    Create a grain boundary according to provided configuration with selected builder.
+    Args:
+        configuration (GrainBoundaryConfiguration): The configuration of the grain boundary.
+        builder (Optional[GrainBoundaryBuilder]): The builder to use for creating the grain boundary.
+    Returns:
+        Material: The material with the grain boundary.
+
+    """
     if builder is None:
         builder = GrainBoundaryBuilder()
     return builder.get_material(configuration)