Normalize adding (and allowing missing) trailing newlines for READMEs. #4524

	name: Validate WRITEMEs

	# Controls when the action will run.
	on: # yamllint disable-line rule:truthy
	# Triggers the workflow on push or pull request events but only for the main branch
	push:
	branches: [main]
	pull_request:
	branches: [main]

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

	# A workflow run is made up of one or more jobs that can run sequentially or in parallel
	jobs:
	# This workflow contains a single job called "build"
	build:
	name: Validate WRITEMEs
	# The type of runner that the job will run on
	runs-on: ubuntu-latest

	# Steps represent a sequence of tasks that will be executed as part of the job
	steps:
	- name: Checkout repo content
	uses: actions/checkout@v4 # checkout the repository content to github runner.
	- name: Setup Python
	uses: actions/setup-python@v3
	with:
	python-version: 3.11 # install the python needed
	- name: Install dependencies
	run: >-
	python3 -m pip install -r .tools/readmes/requirements.txt
	- name: Check WRITEMEs
	run: >-
	python3 .tools/readmes/writeme.py --check --diff

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