Fix docstring typo about SamplingRule #252

	name: Unit Testing
	on:
	push:
	branches:
	- master
	pull_request:
	branches:
	- master

	jobs:
	test:
	runs-on: ubuntu-22.04
	env:
	py37: 3.7
	py38: 3.8
	py39: 3.9
	py310: '3.10'
	py311: '3.11'
	py312: '3.12'
	DB_DATABASE: test_db
	DB_USER: root
	DB_PASSWORD: root
	strategy:
	fail-fast: false
	matrix:
	python-version: [py37, py38, py39, py310, py311, py312]
	testenv: [core, ext]
	steps:
	- name: Checkout repo
	uses: actions/checkout@v3

	- name: Start MySQL
	if: ${{ matrix.testenv == 'ext' }}
	run: \|
	sudo /etc/init.d/mysql start
	mysql -e 'CREATE DATABASE ${{ env.DB_DATABASE }};' -u${{ env.DB_USER }} -p${{ env.DB_PASSWORD }}
	mysql -e 'CREATE DATABASE test_dburl;' -u${{ env.DB_USER }} -p${{ env.DB_PASSWORD }}
	mysql -e "CREATE USER test_dburl_user@localhost IDENTIFIED BY 'test]password';" -u${{ env.DB_USER }} -p${{ env.DB_PASSWORD }}
	mysql -e "GRANT ALL PRIVILEGES ON test_dburl.* TO test_dburl_user@localhost;" -u${{ env.DB_USER }} -p${{ env.DB_PASSWORD }}
	mysql -e "FLUSH PRIVILEGES;" -u${{ env.DB_USER }} -p${{ env.DB_PASSWORD }}
	- name: Setup Python
	uses: actions/setup-python@v4
	with:
	python-version: ${{ env[matrix.python-version] }}

	- name: Install tox
	run: pip install "tox<=3.27.1" -U tox-factor setuptools

	- name: Cache tox environment
	# Preserves .tox directory between runs for faster installs
	uses: actions/cache@v3
	with:
	path: \|
	.tox
	~/.cache/pip
	key: tox-cache-${{ matrix.python-version }}-${{ matrix.testenv }}-${{ hashFiles('tox.ini') }}

	- name: Run tox
	run: \|
	tox -f ${{ matrix.python-version }}-${{ matrix.testenv }}

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