Add (or update) GitHub Actions (GHA) files and related config. #23

	---
	name: Markdown Quality Assistance

	on:
	# This event occurs when there is activity on a pull request. The workflow
	# will be run against the commits, after merge to the target branch (main).
	pull_request:
	branches: [ main ]
	paths:
	- '**.md'
	- '.github/workflows/markdown.yml'
	types: [ opened, reopened, synchronize ]
	# This event occurs when there is a push to the repository.
	push:
	paths:
	- '**.md'
	- '.github/workflows/markdown.yml'
	# Allow manually triggering the workflow.
	workflow_dispatch:

	# Cancels all previous workflow runs for the same branch that have not yet completed.
	concurrency:
	group: ${{ github.workflow }}-${{ github.ref }}
	cancel-in-progress: true

	permissions:
	# Needed to allow the "concurrency" section to cancel a workflow run.
	actions: write

	jobs:
	# 01.quality.markdown.lint-syntax.yml
	lint-markdown-syntax:
	name: Markdown Linting
	runs-on: ubuntu-24.04
	steps:
	- uses: actions/checkout@v4
	- uses: docker://pipelinecomponents/remark-lint
	with:
	args: >-
	remark
	--rc-path=.config/.remarkrc
	--ignore-pattern='/vendor/'

Provide feedback