Just added a missing comma in the example for the `apt.upgrade` operation #1224

Job	Run time
type-check	22s
type-check	22s
lint	25s
lint	25s
end-to-end-test (ubuntu-20.04, local)	31s
end-to-end-test (ubuntu-20.04, local)	31s
end-to-end-test (ubuntu-20.04, ssh)	1m 23s
end-to-end-test (ubuntu-20.04, ssh)	1m 23s
unit-test (ubuntu-20.04, 3.7)	1m 3s
unit-test (ubuntu-20.04, 3.7)	1m 8s
end-to-end-test (ubuntu-20.04, docker)	39s
end-to-end-test (ubuntu-20.04, docker)	39s
unit-test (ubuntu-20.04, 3.8)	1m 0s
unit-test (ubuntu-20.04, 3.8)	1m 3s
end-to-end-test (ubuntu-latest, local)	34s
end-to-end-test (ubuntu-latest, local)	34s
end-to-end-test (ubuntu-latest, ssh)	1m 26s
end-to-end-test (ubuntu-latest, ssh)	1m 26s
unit-test (ubuntu-20.04, 3.9)	1m 4s
unit-test (ubuntu-20.04, 3.9)	1m 9s
end-to-end-test (ubuntu-latest, docker)	33s
end-to-end-test (ubuntu-latest, docker)	33s
unit-test (ubuntu-20.04, 3.10)	58s
unit-test (ubuntu-20.04, 3.10)	1m 1s
end-to-end-test (macos-latest, local)	44s
end-to-end-test (macos-latest, local)	44s
unit-test (ubuntu-20.04, 3.11)	1m 2s
unit-test (ubuntu-20.04, 3.11)	1m 2s
unit-test (ubuntu-latest, 3.7)	1m 3s
unit-test (ubuntu-latest, 3.7)	1m 9s
unit-test (ubuntu-latest, 3.8)	49s
unit-test (ubuntu-latest, 3.8)	1m 18s
unit-test (ubuntu-latest, 3.9)	46s
unit-test (ubuntu-latest, 3.9)	1m 4s
unit-test (ubuntu-latest, 3.10)	1m 0s
unit-test (ubuntu-latest, 3.10)	1m 3s
unit-test (ubuntu-latest, 3.11)	56s
unit-test (ubuntu-latest, 3.11)	59s
unit-test (macos-12, 3.11)	1m 11s
unit-test (macos-12, 3.11)	3m 37s
unit-test (windows-2022, 3.11)	59s
unit-test (windows-2022, 3.11)	1m 43s
tests-done	3s
tests-done	2s
	41m 26s

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