Add spell check and update Lighthouse book #2999

	name: linkcheck

	on:
	push:
	branches:
	- unstable
	pull_request:
	paths:
	- 'book/**'
	merge_group:

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

	jobs:
	linkcheck:
	name: Check broken links
	runs-on: ubuntu-latest

	steps:
	- name: Checkout code
	uses: actions/checkout@v4

	- name: Run mdbook server
	run: \|
	docker run -v ${{ github.workspace }}/book:/book --name book -p 3000:3000 -d peaceiris/mdbook:latest serve --hostname 0.0.0.0
	sleep 5

	- name: Print logs
	run: docker logs book

	- name: Run linkcheck
	run: \|
	curl -sL https://github.com/filiph/linkcheck/releases/download/3.0.0/linkcheck-3.0.0-linux-x64.tar.gz \| tar xvzf - linkcheck/linkcheck --strip 1
	./linkcheck localhost:3000 -d

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