add note about macOS flagging apps from the internet and fix a few typos #152

	name: Test build

	on:
	pull_request:
	branches: [ master ]

	jobs:
	build:
	runs-on: ubuntu-22.04

	steps:
	- uses: actions/checkout@v3
	with:
	persist-credentials: false

	- name: Set up Python 3.x
	uses: actions/setup-python@v4
	with:
	# Semantic version range syntax or exact version of a Python version
	python-version: '3.11.0'

	# You can test your matrix by printing the current Python version
	- name: Display Python version
	run: python -c "import sys; print(sys.version)"

	- name: Cache pip
	uses: actions/cache@v3
	with:
	# This path is specific to Ubuntu
	path: ~/.cache/pip
	# Look to see if there is a cache hit for the corresponding requirements file
	key: ${{ runner.os }}-pip-${{ hashFiles('requirements.txt') }}
	restore-keys: \|
	${{ runner.os }}-pip-
	${{ runner.os }}-

	- name: Install dependencies
	run: pip install -r requirements.txt

	- name: Run Mkdocs
	# Build the site using mkdocs
	run: mkdocs build --verbose --clean --strict

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