Built in ALT Text - Buttons

Hello Everyone,

I work in RISE360 (often) and create bilingual courses, one built in EN, cloned and translated into French. When running an accessible check, the buttons have alt text built into them "OPENS IN A NEW TAB". I cannot find how to change this build in text to "Ouvre dans une nouvelle fenêtre". It's not under the labels section. Any advice would be appreciated.