added introductory paragraph to workshop 1 #19

	name: deploy MRI-on-BEAR documentation (only on push to main branch)
	on:
	push:
	branches:
	- "main"
	jobs:
	build-docs:
	runs-on: ubuntu-latest
	permissions: write-all
	steps:
	- name: checkout
	uses: actions/checkout@v3
	with:
	fetch-depth: 0
	- name: set up Python
	uses: actions/setup-python@v4
	with:
	python-version: '>=3.10' # allow 3.10 and above
	- name: install mkdocs and dependencies
	run: \|
	pip install -r requirements.txt
	mkdocs --version
	- name: build docs
	run: mkdocs build --strict
	- name: deploy docs
	run: mkdocs gh-deploy --force

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