Update tutorial.md on links about "entry point" and "plugin" #2489

	name: docs-build

	on:
	push:
	branches-ignore: [gh-pages]
	pull_request:
	branches-ignore: [gh-pages]
	paths: ['docs/**']

	jobs:

	docs-linkcheck:

	runs-on: ubuntu-latest
	timeout-minutes: 30

	steps:
	- uses: actions/checkout@v2
	- name: Set up Python 3.9
	uses: actions/setup-python@v2
	with:
	python-version: '3.9'
	- name: Install python dependencies
	run: \|
	pip install --upgrade pip
	pip install -e .[docs,tests,rest,atomic_tools]
	- name: Build HTML docs
	id: linkcheck
	run: \|
	make -C docs html linkcheck 2>&1 \| tee check.log
	echo "::set-output name=broken::$(grep '(line\s[0-9])$\s$broken$\s$' check.log)"
	env:
	SPHINXOPTS: -nW --keep-going

	- name: Show docs build check results
	run: \|
	if [ -z "${{ steps.linkcheck.outputs.broken }}" ]; then
	echo "No broken links found."
	exit 0
	else
	echo "Broken links found:"
	echo "${{ steps.linkcheck.outputs.broken }}"
	exit 1
	fi

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