Add agent self-observability. #2106

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	name: Dead Link Checker

	on:
	pull_request:

	concurrency:
	group: dlc-${{ github.event.pull_request.number \|\| github.ref }}
	cancel-in-progress: true

	jobs:
	CheckDeadLinks:
	runs-on: ubuntu-latest
	timeout-minutes: 30
	steps:
	- uses: actions/checkout@v2
	- run: sudo npm install -g markdown-link-check@3.10.3
	- run: \|
	for file in $(find . -name "*.md"); do
	markdown-link-check -c .dlc.json -q "$file"
	done

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