If you want to change the mount directory for the automount, you can do so in /etc/systemd/system/mnt-pve-{name}.mount on the affected node.
Create the new directory and then restart the node (or manually umount/mount once).
Keep in mind that any changes to the mount point have to be manually applied to storages, as oguz mentioned above (alternatively you can manually change the path in /etc/pve/storage.cfg).