improve formatting of the quickstart tutorial #1007

Job	Run time
Black format	9s
Lint with flake8 for syntax+other error codes	11s
Lint Notebooks	8s
Type check	2m 0s
Test: Python 3.7 on ubuntu-latest	1m 52s
Test: Python 3.8 on ubuntu-latest	2m 22s
Test: Python 3.9 on ubuntu-latest	2m 25s
Test: Python 3.10 on ubuntu-latest	2m 15s
Test: Python 3.11 on ubuntu-latest	2m 22s
Test: Python 3.7 on macos-latest	2m 21s
Test: Python 3.8 on macos-latest	3m 11s
Test: Python 3.9 on macos-latest	5m 25s
Test: Python 3.10 on macos-latest	4m 0s
Test: Python 3.11 on macos-latest	2m 24s
Test: Python 3.7 on windows-latest	3m 42s
Test: Python 3.8 on windows-latest	4m 55s
Test: Python 3.9 on windows-latest	4m 55s
Test: Python 3.10 on windows-latest	5m 34s
Test: Python 3.11 on windows-latest	5m 31s
	55m 42s

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