fixed error #20

	# https://squidfunk.github.io/mkdocs-material/publishing-your-site/#github-pages

	name: Build and Publish User Docs
	on:
	push:
	branches:
	- main
	- mkdocs
	permissions:
	contents: write
	jobs:
	deploy:
	runs-on: ubuntu-latest
	steps:
	- uses: actions/checkout@v4
	- name: Configure Git Credentials
	run: \|
	git config user.name github-actions[bot]
	git config user.email 41898282+github-actions[bot]@users.noreply.github.com
	- uses: actions/setup-python@v5
	with:
	python-version: 3.x
	- run: echo "cache_id=$(date --utc '+%V')" >> $GITHUB_ENV
	- uses: actions/cache@v4
	# https://github.com/actions/cache
	with:
	key: mkdocs-material-${{ env.cache_id }}
	path: .cache
	restore-keys: \|
	mkdocs-material-
	- run: >-
	pip install mkdocs-material mkdocs-awesome-pages-plugin
	mkdocs-section-index mkdocs-toc-sidebar-plugin mike
	markdown-include mkdocs-pdf-export-plugin
	mkdocs-mermaid2-plugin
	httplib2
	mkdocs_build_plantuml_plugin
	mkdocs-exclude mkdocs-minify-plugin mkdocs-versioning
	# https://www.mkdocs.org/user-guide/cli/#mkdocs-gh-deploy
	- run: mkdocs gh-deploy --force

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