[MRG] Update error message for adding drives #1313

	name: Linkcheck

	on:
	push:
	branches: ['**']
	pull_request:
	branches: ['**']

	jobs:
	build:

	runs-on: ${{ matrix.os }}
	strategy:
	matrix:
	os: [ubuntu-latest]
	python-version: [3.8]

	steps:
	- uses: actions/checkout@v2
	- uses: conda-incubator/setup-miniconda@v2
	with:
	activate-environment: test
	python-version: ${{ matrix.python-version }}
	- name: Install dependencies
	shell: bash -el {0}
	run: \|
	sudo apt-get install pandoc
	python -m pip install --upgrade pip
	pip install numpy matplotlib scipy NEURON
	pip install sphinx-gallery sphinx sphinx_bootstrap_theme sphinx-copybutton numpydoc pillow nbsphinx
	pip install '.[gui]'
	- name: Linkcheck
	shell: bash -el {0}
	run: \|
	make -C doc linkcheck

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