Valheim fix

[choren5150]

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[choren5150]

This change updates the startup command to use the latest variables with the latest release. It also addresses the need to currently use a longer named file for a temporary fix by the Valheim+ devs until the core Valheim development team fixes the localization issues. I did not update the base variable name of UnixServer.zip to UnixServerRenamed.zip that currently exists as part of Valheim+ 0.9.17.1 as the Valheim+ devs have asserted they will revert to the old name once they no longer have to leverage the current workaround.