Update .readthedocs.yml #489

	name: Style check

	# Trigger workflow on pull requests or push to master branch.
	on:
	push:
	branches: [ master ]
	pull_request:
	branches: [ master ]

	jobs:
	linting:
	runs-on: ubuntu-latest

	strategy:
	matrix:
	python-version: [3.9]

	steps:
	# Checks-out repository under $GITHUB_WORKSPACE
	- uses: actions/checkout@v2

	- name: Setup Python # Set Python version
	uses: actions/setup-python@v2
	with:
	python-version: ${{ matrix.python-version }}

	- name: Install dependencies
	run: \|
	python -m pip install --upgrade pip
	pip install flake8
	pip install --upgrade -r requirements.txt
	- name: Lint with flake8
	run: \|
	export PYTHONPATH=$PYTHONPATH:.
	./tests/run_linter.sh

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