[WIP] Docs: fix `reStructuredText` syntax for figures #6

	name: Check changed files

	on:
	pull_request:

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

	jobs:
	check_diff:
	runs-on: ubuntu-20.04
	steps:
	- name: Checkout code
	uses: actions/checkout@v3
	with:
	fetch-depth: 0
	- name: Define base and head refs
	env:
	BASE_REF: ${{ github.event.pull_request.base.ref }}
	HEAD_REF: ${{ github.event.pull_request.head.ref }}
	run: \|
	echo "Base ref: ${BASE_REF}"
	echo "Head ref: ${HEAD_REF}"
	- name: Add main repository as remote
	run: \|
	git remote add main https://github.com/ECP-WarpX/WarpX.git
	- name: Fetch base branch from main repository
	run: \|
	git fetch main ${BASE_REF}
	- name: Get changed files
	run: \|
	git diff --name-only --diff-filter=ACMRTUXB main/${BASE_REF}..${HEAD_REF} > check_diff.txt
	- name: Check changed files
	run: \|
	if grep -v -E "^(docs\|\.github)/" check_diff.txt; then
	echo "skip=false" >> ${GITHUB_OUTPUT}
	else
	echo "skip=true" >> ${GITHUB_OUTPUT}
	fi
	outputs:
	skip: ${{ steps.check.outputs.skip }}

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