* Renamed gr to el per iso639-2
* Fixed some typos
* Removed plural form of translated handshake word because that would add the latin letter 's' in the end, which is wrong
* Added the -i option in Usage section for create_sibling.sh
* Added troubleshooting for a special case when creating a sibling, incorrect PARTUUIDs are saved in /etc/fstab, resulting in mount error while booting.