update test_linearboost,py

Author: hamidkm9

tests/test_linearboost.py

@@ -4,13 +4,15 @@
 
 from ._utils import check_estimator, get_expected_failed_tests, _yield_all_checks
 
+
 def get_expected_failed_tests(estimator):
     failed = []
     for check in _yield_all_checks(estimator):
         if check.__name__ == "check_sample_weights_invariance":
             failed.append(check)
     return failed
 
+
 def test_linear_boost_estimator():
     """
     Test whether `LinearBoostClassifier` adheres to scikit-learn conventions.