feat(docs): add set up your env in course #423

	name: Spell Checking

	on:
	pull_request:
	branches:
	- "**"

	jobs:
	spellcheck:
	name: Check Spelling with custom Python script
	runs-on: ubuntu-latest
	strategy:
	matrix:
	python-version: [3.9]
	steps:
	- name: Checkout code
	uses: actions/checkout@v2

	- name: Set up Python
	uses: actions/setup-python@v2
	with:
	python-version: ${{ matrix.python-version }}

	- name: Install dependencies
	run: \|
	sudo apt-get update
	sudo apt-get install -y aspell aspell-en
	python -m pip install --upgrade pip
	pip install spacy markdown-it-py pyspellchecker
	python -m spacy download en_core_web_sm

	- name: Run spell-check script
	run: \|
	set -e
	python .github/spelling/check_spelling.py

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