Fix wrong Volume object step size tooltip

source/blender/makesrna/intern/rna_volume.c

@@ -441,7 +441,7 @@ static void rna_def_volume_render(BlenderRNA *brna)
   RNA_def_property_ui_range(prop, 0.0, 100.0, 1, 3);
   RNA_def_property_ui_text(prop,
                            "Step Size",
-                           "Distance between volume samples. Higher values render more detail at "
+                           "Distance between volume samples. Lower values render more detail at "
                            "the cost of performance. If set to zero, the step size is "
                            "automatically determined based on voxel size");
   RNA_def_property_update(prop, 0, "rna_Volume_update_display");