index.md: add link to fontspec-code.pdf #45

	name: Documentation typesetting

	# Currently we run in two situations:
	on:
	# Whenever someone pushes to a branch in our repo
	push:
	branches:
	- "**"
	# Whenever a pull request is opened, reopened or gets new commits.
	pull_request:
	# This implies that for every push to a local branch in our repo for which a
	# pull request is open this runs twice. But it's important to ensure that pull
	# requests get tested even if their branch comes from a fork.
	# Also the PR check runs on the merged commit, not on the unmerged branch.

	# Allows you to run this workflow manually from the Actions tab
	workflow_dispatch:

	jobs:
	l3build:
	runs-on: ubuntu-latest
	steps:
	- name: Checkout repository
	uses: actions/checkout@v4
	- name: Install TeX Live
	uses: zauguin/install-texlive@v3
	with:
	package_file: .github/tl_packages
	- name: Checkout fonts for testing
	uses: actions/checkout@v4
	with:
	repository: wspr/fontspec-test-fonts
	path: fontspec-test-fonts
	- name: Install fonts for testing
	run: ./fontspec-test-fonts/install.sh
	- name: Documentation
	run: l3build doc -q -H --show-log-on-error
	# Now we create the artifacts: There are two cases where this happens.
	# 1. If we failed running tests
	- name: Archive failed test output
	if: ${{ always() }}
	uses: zauguin/l3build-failure-artifacts@v1
	with:
	name: Documentation
	retention-days: 3
	# 2. If we succeed building documentation
	- name: Archive documentation
	if: ${{ success() }}
	uses: actions/upload-artifact@v4
	with:
	name: Documentation
	path: "*/.pdf"
	retention-days: 21

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