[pre-commit.ci] auto fixes from pre-commit.com hooks

for more information, see https://pre-commit.ci

docs/conf.py

@@ -1,6 +1,7 @@
 """
 Configuration file for the Sphinx documentation builder.
 """
+
 import os
 from pathlib import Path
 from datetime import datetime

examples/3d_functionality.py

@@ -7,6 +7,7 @@
 ``sunpy`` and :meth:`~astropy.visualization.wcsaxes.WCSAxes.plot_coord` from ``astropy``
 to produce them in 3D.
 """
+
 import astropy.units as u
 import numpy as np
 from astropy.constants import R_sun

examples/field_lines.py

@@ -9,6 +9,7 @@
 code from `streamtracer <https://streamtracer.readthedocs.io/en/stable/>`__.
 Wheels are provided for all major platforms, so this example should run without issue.
 """
+
 import astropy.units as u
 import matplotlib.pyplot as plt
 import numpy as np

sunkit_pyvista/tests/test_plotting.py

@@ -1,6 +1,7 @@
 """
 This file contains figure comparison tests.
 """
+
 import astropy.constants as const
 import astropy.units as u
 import matplotlib.pyplot as plt