Different translations between English and French on notifications settings

Steps to reproduce:

• Open the user profile >Notification tab or the global notifications (e.g. http://localhost:8080/xwiki/bin/admin/XWiki/XWikiPreferences?editor=globaladmin&section=Notifications)
• Switch the wiki language between English and French

Result: there is a discrepancy concerning the translations:

• using FR you have "Système" (usually related to content produced by the superadmin)
• using EN you have "Pages" (all pages in general)

Expected result: we should have "Pages" in both cases to reflect it applies to all content