Update window_functions.md: correct description of rank_dense() #1124

	name: Build stable documentation
	on: pull_request

	jobs:
	# Build job
	build_html:
	runs-on: ubuntu-24.04
	steps:
	- name: Checkout
	uses: actions/checkout@v4
	- name: Install Python requirements
	run: pip3 install -r requirements.txt --break-system-packages
	- name: Setup Ruby
	uses: ruby/setup-ruby@v1
	with:
	ruby-version: '3.3' # Not needed with a .ruby-version file
	bundler-cache: true # runs 'bundle install' and caches installed gems automatically
	cache-version: 0 # Increment this number if you need to re-download cached gems
	- name: Setup Pages
	id: pages
	uses: actions/configure-pages@v5
	- name: Build with Jekyll
	run: bundle exec jekyll build --config _config.yml,_config_exclude_archive.yml

	build_pdf:
	runs-on: ubuntu-24.04
	container:
	image: docker://pandoc/extra:3.1.1.0
	options: --entrypoint=sh
	defaults:
	run:
	working-directory: single-file-document
	steps:
	- name: Checkout
	uses: actions/checkout@v4
	- name: Setup Python
	run: \|
	PYTHONUNBUFFERED=1
	apk add --update --no-cache python3 && ln -sf python3 /usr/bin/python
	python3 -m ensurepip
	- name: Install Python requirements
	run: pip3 install -r requirements.txt
	- name: Concatenate files
	run: python3 concatenate_to_single_file.py

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