fix docstyle

Author: engineerjoe440

.github/workflows/pytest.yml

@@ -29,4 +29,4 @@ jobs:
         python3 -c "import electricpy; print('electricpy.__file__')"
     - name: Test with pytest
       run: |
-        pytest --pydoctest --xdoctest
+        pytest --pydocstyle --xdoctest