Fix build setup typos #608

Job	Run time
test-build	5m 3s
test-e2e (scalameta/munit, sbt)	1m 30s
test-e2e (blackdoor/jose, mill 0.9)	3m 7s
test-e2e (barnardb/tinyplate, mill 0.10)	1m 55s
test-e2e (almond-sh/almond, mill 0.11)	10m 14s
test-e2e (com-lihaoyi/mill, mill 1.0)	7m 40s
test-e2e (virtuslab/scala-cli, mill 0.12)	6m 16s
test-e2e (kordyjan/pytanie, scala-cli)	1m 24s
	37m 9s

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