refactor(@angular/cli): Add instructions to component zoneless migrat… #8631

Job	Run time
build	18s
lint	18s
build-e2e-windows	18s
Browser Compatibility Tests	1s
test	1s
publish-snapshots	1s
e2e	1s
e2e-package-managers	1s
e2e-snapshots	1s
e2e-windows	1s
	1m 1s

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