Fix CI workflow to install mkdocs-material theme #2

	name: Build and Deploy MkDocs Site

	on:
	push:
	branches:
	- main
	pull_request:
	branches:
	- main

	jobs:
	build:
	runs-on: ubuntu-latest

	steps:
	- name: Checkout code
	uses: actions/checkout@v3

	- name: Set up Python
	uses: actions/setup-python@v4
	with:
	python-version: 3.9

	- name: Install dependencies
	run: \|
	python -m pip install --upgrade pip
	pip install mkdocs mkdocs-material

	- name: Build the site
	run: mkdocs build

	- name: Deploy to GitHub Pages
	uses: peaceiris/actions-gh-pages@v3
	with:
	deploy_branch: gh-pages
	folder: site

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