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

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

Author: pre-commit-ci[bot]

doc/en/getting-started.rst

@@ -213,6 +213,7 @@ Compare floating-point values with pytest.approx
         # content of test_approx.py
         import pytest
 
+
         def test_sum():
             assert (0.1 + 0.2) == pytest.approx(0.3)
 

doc/en/how-to/assert.rst

@@ -78,9 +78,11 @@ errors are common. Instead of using ``assert abs(a - b) < tol`` or
     import pytest
     import numpy as np
 
+
     def test_floats():
         assert (0.1 + 0.2) == pytest.approx(0.3)
 
+
     def test_arrays():
         a = np.array([1.0, 2.0, 3.0])
         b = np.array([0.9999, 2.0001, 3.0])