change sphinx command in run-tests.py #84

	name: run-tests

	on: [push, pull_request]

	jobs:
	latest:
	runs-on: ubuntu-latest
	strategy:
	matrix:
	python-version: [3.6, 3.7, 3.8, 3.9]

	steps:
	- uses: actions/checkout@v2
	- name: Set up Python ${{ matrix.python-version }}
	uses: actions/setup-python@v1
	with:
	python-version: ${{ matrix.python-version }}
	- name: Install dependencies
	run: \|
	python -m pip install --upgrade pip
	pip install -r pip-requirements.txt
	- name: run tests
	run: \|
	./run-tests.py

	other-os:
	runs-on: ${{ matrix.os }}
	strategy:
	matrix:
	os: [macos-latest, windows-latest]
	python-version: [3.8]

	# have to copy steps from above, as anchors are currently
	# not supported by github workflow (Jan 2020).
	steps:
	- uses: actions/checkout@v2
	- name: Set up Python ${{ matrix.python-version }}
	uses: actions/setup-python@v1
	with:
	python-version: ${{ matrix.python-version }}
	- name: Install dependencies
	run: \|
	python -m pip install --upgrade pip
	pip install -r pip-requirements.txt
	- name: run tests
	run: \|
	./run-tests.py

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