Update group documentation #116

	# Part of the Carbon Language project, under the Apache License v2.0 with LLVM
	# Exceptions. See /LICENSE for license information.
	# SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception

	name: GitHub Pages CI

	on:
	pull_request:

	# Cancel previous workflows on the PR when there are multiple fast commits.
	# https://docs.github.com/en/actions/using-workflows/workflow-syntax-for-github-actions#concurrency
	concurrency:
	group: ${{ github.workflow }}-${{ github.head_ref \|\| github.ref }}
	cancel-in-progress: true

	permissions:
	contents: read

	jobs:
	# Build job
	build:
	runs-on: ubuntu-latest
	steps:
	- name: Harden Runner
	uses: step-security/harden-runner@5c7944e73c4c2a096b17a9cb74d65b6c2bbafbde # v2.9.1
	with:
	egress-policy: audit

	- name: Checkout
	uses: actions/checkout@692973e3d937129bcbf40652eb9f2f61becf3332 # v4.1.7
	- name: Prebuild actions
	run: ./website/prebuild.py
	- name: Setup Ruby
	uses: ruby/setup-ruby@a6e6f86333f0a2523ece813039b8b4be04560854 # v1.190.0
	with:
	# Runs 'bundle install' and caches installed gems automatically.
	bundler-cache: true
	# Increment this number if you need to re-download cached gems.
	cache-version: 0
	- name: Build with Jekyll
	run: bundle exec jekyll build

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