Update frFR.lua

Correct line 90 : reason
3x Carbonite.Quests\Locales\frFR-Français.lua:90: escape sequence too large near
'"Quand actié, synchronise les deux fenêtres de surveillances de Qu'
I do not know if it comes from the source file in English or French translation, but it lacked a V / source BugSack