DOC: add a doctest step to CI to allow writing testable code blocs, fix existing docstring code examples errors #4

	name: Documentation tests

	on:
	push:
	branches:
	-dev
	-main
	-master
	pull_request:

	jobs:
	build:
	runs-on: ubuntu-latest

	steps:
	- name: Git clone
	uses: actions/checkout@v2

	- name: Set up Python
	uses: actions/setup-python@v4
	with:
	python-version: "3.11"

	- name: Install dependencies
	run: \|
	python -m pip install --upgrade pip
	pip install -r requirements.doc.txt

	- name: Test doc
	run: cd doc && make doctest

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