Typo: Update ch01-02-hello-world.md (#32) #92

	# This is a basic workflow to help you get started with Actions

	name: Auto gh-pages Deploy

	# Controls when the action will run.
	on:
	push:
	branches: [ master ]

	# 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:
	# 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:
	# Checks-out your repository under $GITHUB_WORKSPACE, so your job can access it
	- uses: actions/checkout@v2

	- name: Setup mdBook
	uses: peaceiris/actions-mdbook@v1
	with:
	mdbook-version: 'latest'

	- name: Build mdbook
	run: mdbook build

	- name: Deploy gh-pages
	uses: peaceiris/actions-gh-pages@v3
	with:
	github_token: ${{ secrets.GITHUB_TOKEN }}
	publish_dir: ./book
	user_name: 'github-actions[bot]'
	user_email: 'github-actions[bot]@users.noreply.github.com'
	commit_message: 'Auto Deploy (${{ github.event.head_commit.message }})'
	cname: doc.rust-kr.org

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