chore: restore a green pre-commit run

[Eljees]

Run linters on code base fails on master itself (run on d5c7b77), so no pull request in this repository gets a usable signal out of that job. Three hooks are red.

pydocstyle - src/docformatter/classify.py:481

D301: Use r""" if any backslashes in a docstring

_is_blank_line spells out "\n" and " \n" in its docstring, so it needs an r-string. That one is mine, from #369 - sorry. The rendered text does not change: "\\n" in a plain docstring and "\n" in a raw one are the same two characters.

mypy - src/docformatter/configuration.py:46

error: Incompatible types in assignment (expression has type "None", variable has type Module)  [assignment]

The ImportError fallback from #371 assigns None to a name mypy has already bound to a module. A targeted # type: ignore[assignment] is the usual spelling for an optional import. I first tried declaring tomllib: Optional[ModuleType] above the try, which mypy accepts, but that puts a statement ahead of from docformatter import __pkginfo__ and ruff then reports E402.

end-of-file-fixer - CHANGELOG.md carries three trailing blank lines.

One thing worth flagging: CHANGELOG.md is regenerated by heinrichreimer/github-changelog-generator-action in do-release.yml and pushed straight to master by EndBug/add-and-commit, so it never passes through pre-commit and those blank lines will come back at the next release. If you would rather not re-strip them every time, adding CHANGELOG.md to exclude: in .pre-commit-config.yaml would settle it for good - happy to do that here instead, whichever you prefer.

Checked against the pinned hook versions - pydocstyle 6.3.0, mypy 1.20.1, black 26.3.1, isort 8.0.1, ruff 0.15.11, eradicate 3.0.1 and docformatter's own hook all come back clean. pytest tests/ is 509 passed, 4 skipped, identical to master.