In the main configuration file, look at the ENCHANTED BOOKS section.
Modify book name
To modify the enchant book name, modify the enchant_book_name value.
Modify book lores
To modify the enchant book lores, modify the enchant_book_lores value.
Available placeholders
You can use these values as placeholders :
The %enchant_name% placeholder that will be replaced by the enchant display name.
The %description% placeholder will be replaced by the enchant description (if it's a multi line description, it will paste it as a multi line placeholder).