[wf] max-parallel in certifier-wf #1923

	# workflow to run the acme2certifier unittest suite

	name: Markdown check

	on:
	push:
	pull_request:
	branches: [ devel ]
	schedule:
	# * is a special character in YAML so you have to quote this string
	- cron: '0 2 * * 6'

	jobs:
	markdown-check:
	runs-on: ubuntu-latest
	steps:
	- uses: actions/checkout@master
	- uses: gaurav-nelson/github-action-markdown-link-check@v1
	- name: Lint changelog file root
	uses: avto-dev/markdown-lint@v1
	with:
	args: '*.md'
	- name: Lint changelog file docs
	uses: avto-dev/markdown-lint@v1
	with:
	args: './docs/*.md'
	- name: Lint changelog file docker
	uses: avto-dev/markdown-lint@v1
	with:
	args: './examples/Docker/*.md'

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