Korean translation causes broken tooltip when using "%s%"

In the Korean translation file (ko_kr.json) of the FirstAid mod, the following string causes a rendering issue in-game:

`"firstaid.gui.sleep_heal_amount": "잠이 체력의 %s%를 회복시킵니다"`

Because of the %s% structure, Minecraft misinterprets the second % as part of a format placeholder. This leads to a display issue where the string is broken or not shown properly.