docs: add appendix to explain special case. #2041

	name: Check tox tests, lint and types

	on:
	push:
	branches:
	- master
	- releases/*
	pull_request:
	types:
	- opened
	- synchronize
	- reopened

	jobs:
	check_document:
	name: Check packaging 📦
	runs-on: ubuntu-22.04
	steps:
	- uses: actions/checkout@v4
	with:
	fetch-depth: 20
	fetch-tags: true
	- name: Set up Python 3.12
	uses: actions/setup-python@v5
	with:
	python-version: '3.12'
	- name: Install tools
	run: \|
	pip install -U pip
	pip install tox tox-gh-actions coveralls coverage[toml]
	- name: Check
	run: tox
	env:
	PYTEST_ADDOPTS: --cov-config=pyproject.toml --cov --cov-append --verbose
	- name: Upload Coverage
	run: coveralls --service=github
	env:
	GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}

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