add an only_commits spec to `.appveyor.yml` #224

	name: docs

	on: [push, pull_request]

	jobs:
	build:

	runs-on: ubuntu-latest

	steps:
	- name: Set up environment
	run: \|
	git config --global user.email "test@github.land"
	git config --global user.name "GitHub Almighty"
	- uses: actions/checkout@v4
	- name: Set up Python 3.8
	uses: actions/setup-python@v5
	with:
	python-version: 3.8
	- name: Install dependencies
	run: \|
	python -m pip install --upgrade pip
	pip install -r requirements-devel.txt
	pip install .
	- name: Build docs
	run: \|
	make -C docs html

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