typo #176

	name: deploy-book

	# Only run this when the master branch changes
	on:
	push:
	branches:
	- source

	# This job installs dependencies, build the book, and pushes it to `gh-pages`
	jobs:
	deploy-book:
	runs-on: macos-latest
	steps:
	- uses: actions/checkout@v3

	# Install dependencies
	- name: Set up Python 3.10
	uses: actions/setup-python@v4
	with:
	python-version: '3.10'

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

	# Build the book
	- name: Build the book
	run: \|
	jupyter-book build .

	# Push the book's HTML to github-pages
	- name: GitHub Pages action
	uses: peaceiris/actions-gh-pages@v3
	with:
	github_token: ${{ secrets.GITHUB_TOKEN }}
	publish_dir: ./_build/html
	# added by Tetsu
	publish_branch: master

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