python/linting: Copy-edit Django coding style reference

docs/python/linting.rst

@@ -6,7 +6,7 @@ Before writing any code, set up formatters and linters.
 Configuration
 -------------
 
-New projects should use `Black <https://black.readthedocs.io/en/stable/>`__. All projects must use `flake8 <https://flake8.pycqa.org/en/latest/>`__ and `isort <https://pycqa.github.io/isort/>`__ with line lengths of 119 (the Django standard). If using Black, `configure it <https://black.readthedocs.io/en/stable/guides/using_black_with_other_tools.html>`__ as follows:
+New projects should use `Black <https://black.readthedocs.io/en/stable/>`__. All projects must use `flake8 <https://flake8.pycqa.org/en/latest/>`__ and `isort <https://pycqa.github.io/isort/>`__ with line lengths of 119 (the Django coding style until 4.0). If using Black, `configure it <https://black.readthedocs.io/en/stable/guides/using_black_with_other_tools.html>`__ as follows:
 
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