fixed a typo in core.py #267

	name: build

	on: [push, pull_request]

	jobs:
	test:
	runs-on: ${{ matrix.os }}
	strategy:
	matrix:
	os: [ubuntu-latest, macos-latest, windows-latest]
	python-version: ['3.7', '3.8', '3.9', '3.10']
	steps:
	- uses: actions/checkout@v3
	- name: Set up Python ${{ matrix.python-version }}
	uses: actions/setup-python@v4
	with:
	python-version: ${{ matrix.python-version }}
	- name: Install dependencies
	run: \|
	python -m pip install --upgrade pip
	pip install -e .
	pip install pytest-cov
	- name: Test with pytest
	run: \|
	pytest --cov=./ --cov-report=xml
	- name: Save coverage report
	uses: actions/upload-artifact@v2
	with:
	name: coverage-report
	path: ./coverage.xml

	upload-coverage:
	needs: test
	runs-on: ubuntu-latest
	steps:
	- name: Checkout code
	uses: actions/checkout@v2
	- name: Download coverage reports
	uses: actions/download-artifact@v2
	with:
	name: coverage-report
	- name: Upload coverage to Codecov
	uses: codecov/codecov-action@v3
	with:
	directory: ./coverage/reports/
	fail_ci_if_error: true
	files: ./coverage.xml
	name: codecov-umbrella
	verbose: true
	codestyle_type_and_doc:
	runs-on: ubuntu-latest
	steps:
	- uses: actions/checkout@v3
	- name: Set up Python 3.8
	uses: actions/setup-python@v4
	with:
	python-version: 3.8
	- name: Install dependencies
	run: \|
	python -m pip install --upgrade pip
	pip install -e .[develop]
	- name: Pytype
	run: \|
	pytype panda_gym
	- name: Check codestyle
	run: \|
	black -l 127 --check panda_gym test
	isort -l 127 --profile black --check panda_gym test
	- name: Make docs
	run: \|
	make html

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