zipl: Fix error message printed with --dumptofs
zipl: Fix error message printed with --dumptofs

The option --dump does not exist. Adjust it to --dumpto.

Signed-off-by: Philipp Rudo <ebc9ed60c9e1dc6a17c00cf7f6009c740d3c3928@linux.ibm.com>
Signed-off-by: Jan Höppner <96138615ab4af0813785fa10d283f3d37eca3b78@linux.ibm.com>

ibm-s390-tools/s390-tools,ibm-s390-tools/s390-tools,ibm-s390-tools/s390-tools,ibm-s390-tools/s390-tools