[chore] Improve queue config validation messages #25573

	name: check-links
	on:
	push:
	branches: [main]
	pull_request:
	merge_group:
	types: [checks_requested]

	concurrency:
	group: ${{ github.workflow }}-${{ github.ref_name }}
	cancel-in-progress: true

	permissions: read-all

	env:
	# renovate: datasource=github-releases depName=tcort/markdown-link-check
	MD_LINK_CHECK_VERSION: "3.12.2"

	jobs:
	changedfiles:
	name: changed files
	runs-on: ubuntu-latest
	env:
	PR_HEAD: ${{ github.event.pull_request.head.sha }}
	outputs:
	files: ${{ steps.changes.outputs.files }}
	steps:
	- name: Checkout Repo
	uses: actions/checkout@11bd71901bbe5b1630ceea73d27597364c9af683 # v4.2.2
	with:
	fetch-depth: 0
	- name: Get changed files
	id: changes
	run: \|
	files=$(git diff --name-only --diff-filter=ACMRTUXB $(git merge-base origin/main $PR_HEAD) $PR_HEAD \| grep .md$ \| xargs)

	if [ -z "$files" ] && git diff --name-only $(git merge-base origin/main $PR_HEAD) $PR_HEAD \| grep -q "package.json"; then
	files="*/.md"
	fi

	echo "files=$files" >> $GITHUB_OUTPUT
	check-links:
	runs-on: ubuntu-latest
	needs: changedfiles
	if: ${{needs.changedfiles.outputs.files}}
	steps:
	- name: Checkout Repo
	uses: actions/checkout@11bd71901bbe5b1630ceea73d27597364c9af683 # v4.2.2
	with:
	fetch-depth: 0

	- name: Install markdown-link-check
	run: npm install -g markdown-link-check@${{ env.MD_LINK_CHECK_VERSION }}

	- name: Run markdown-link-check
	run: \|
	npx --no -- markdown-link-check \
	--verbose \
	--config .github/workflows/check_links_config.json \
	${{needs.changedfiles.outputs.files}} \
	\|\| { echo "Check that anchor links are lowercase"; exit 1; }

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