Docs: fix various incorrect type annotations #419

	name: PHPStan

	on:
	# Run on all pushes and on all pull requests.
	# Prevent the build from running when there are only irrelevant changes.
	push:
	paths-ignore:
	- '**.md'
	- '**.xml'
	pull_request:
	# Allow manually triggering the workflow.
	workflow_dispatch:

	# Cancels all previous workflow runs for the same branch that have not yet completed.
	concurrency:
	# The concurrency group contains the workflow name and the branch name.
	group: ${{ github.workflow }}-${{ github.ref }}
	cancel-in-progress: true

	jobs:
	phpstan:
	name: "PHPStan"

	runs-on: "ubuntu-latest"

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

	- name: Install PHP
	uses: shivammathur/setup-php@v2
	with:
	php-version: 'latest'
	coverage: none
	tools: phpstan

	# Install dependencies and handle caching in one go.
	# Dependencies need to be installed to make sure the PHPUnit classes are recognized.
	# @link https://github.com/marketplace/actions/install-php-dependencies-with-composer
	- name: Install Composer dependencies
	uses: "ramsey/composer-install@v2"
	with:
	# Bust the cache at least once a month - output format: YYYY-MM.
	custom-cache-suffix: $(date -u "+%Y-%m")

	- name: Run PHPStan
	run: phpstan analyse

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