replace fortran90.org with markdown sources on github (#422) #550

	name: Link Checker
	on:
	workflow_dispatch:
	push:
	branches:
	- main
	schedule:
	- cron: "0 4 * * *"
	jobs:
	linkChecker:
	runs-on: ubuntu-latest
	steps:
	- uses: actions/checkout@v4
	- name: Link Checker
	uses: lycheeverse/lychee-action@v2
	id: lychee
	with:
	# note: args has a long default value; when you override it, make sure you don't accidentally forget to include the default options you want! see https://github.com/lycheeverse/lychee-action/blob/master/action.yml
	args: --verbose --no-progress './*/.md' './*/.html' './*/.rst' --accept '100..=103,200..=299, 429' --exclude nlesc.sharepoint.com --exclude support.posit.co --exclude www.intel.com --exclude reddit.com --exclude jsfiddle.net
	env:
	# This token is included to avoid github.com requests to error out with status 429 (too many requests). It only works for GitHub requests (also other GitHub REST API calls), not for the rest of the web.
	GITHUB_TOKEN: ${{secrets.TOKEN_GITHUB}}

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