rauc-hawkbit-updater: fix typo in is-provisioned.conf

The correct syntax is ConditionFoo=, not ConditionalFoo=. This was easily missed because invalid syntax is not fatal, and the service will work correctly regardless of presence or absence of this configuration element.

https://www.freedesktop.org/software/systemd/man/systemd.unit.html#ConditionPathExists=

Signed-off-by: Zygmunt Krynicki zygmunt.krynicki@huawei.com