Enable "nitpicky" mode on Sphinx #709

	name: Check

	on:
	push:
	branches:
	- "master"
	pull_request:

	concurrency:
	group: ${{ github.workflow }}-${{ github.event.pull_request.number \|\| github.ref }}
	cancel-in-progress: true

	jobs:
	build:
	name: ${{ matrix.tox-environment }}
	runs-on: ubuntu-latest

	strategy:
	fail-fast: false
	matrix:
	tox-environment:
	- docs
	- examples
	- lint

	env:
	TOXENV: ${{ matrix.tox-environment }}

	steps:
	- uses: actions/checkout@v4

	- name: Set up Python
	uses: actions/setup-python@v5
	with:
	python-version: '3'
	cache: pip

	- name: Install dependencies
	run: python -m pip install tox

	- name: Run
	run: tox

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