test

Fix extra-packages usage in README #411

Job	Run time
cancel-previous-runs	3s
test-package (ubuntu-latest)	56s
test-as-extra-package (windows-latest)	52s
test-package (windows-latest)	1m 18s
test-as-extra-package (ubuntu-latest)	1m 2s
test-package (macOS-latest)	38s
test-both-actions-and-package (3, ubuntu-latest)	1m 6s
test-actions (macOS-latest)	39s
test-actions (ubuntu-latest)	58s
test-both-actions-and-package (4, windows-latest)	1m 17s
test-both-actions-and-package (3, macOS-latest)	1m 33s
test-both-actions-and-package (3, windows-latest)	1m 2s
test-actions (windows-latest)	50s
test-both-actions-and-package (4, ubuntu-latest)	57s
test-both-actions-and-package (4, macOS-latest)	46s
	13m 57s

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