docs: add a warning about using `timeout_func_only = true` in INI alongside with `pytest.mark` on a test #260

	---
	name: build
	"on": [push, pull_request]
	jobs:
	build:
	runs-on: ${{ matrix.os }}
	strategy:
	fail-fast: false
	matrix:
	python:
	- v: "3.7"
	tox_env: "py37"
	- v: "3.7"
	tox_env: "py37"
	pre_releases: "--pre"
	- v: "3.8"
	tox_env: "py38"
	- v: "3.9"
	tox_env: "py39"
	- v: "3.10"
	tox_env: "py310"
	- v: "3.11"
	tox_env: "py311"
	os: [ubuntu-latest, windows-latest]
	steps:
	- name: Set Git to use LF
	run: \|
	git config --global core.autocrlf false
	git config --global core.eol lf
	- uses: actions/checkout@v3
	- name: Set up Python
	uses: actions/setup-python@v4
	with:
	python-version: ${{ matrix.python.v }}
	- name: Install tox
	run: \|
	python -m pip install --upgrade pip
	pip install -U setuptools tox
	- name: Test
	run: \|
	tox -e ${{ matrix.python.tox_env }} ${{ matrix.python.pre_releases }}

Provide feedback