Fix service/launchpad typo. (#4655) #647

Job	Run time
resolve-modules	6s
image-build (database)	2m 5s
image-build (pay)	1m 30s
image-build (account)	2m 22s
image-build (minio)	1m 57s
image-build (launchpad)	1m 53s
save-sealos / save-sealos	21s
golangci-lint (./service/database)	26s
golangci-lint (./service/account)	23s
golangci-lint (./service/launchpad)	24s
golangci-lint (./service)	13s
golangci-lint (./service/pay)	25s
build-cluster-image (database)	33s
build-cluster-image (pay)	26s
build-cluster-image (account)	36s
build-cluster-image (minio)	28s
build-cluster-image (launchpad)	53s
	15m 1s

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