Update annex.fr.md

00.brainstorming-pedagogical-teams/45.synthesis-structuring/instructions-for-levels/30.beyond/annex.fr.md

@@ -94,7 +94,7 @@ Sont proposées les catégories suivantes, mais à débattre :
 ! ![](lentille-boule-2-reflexions_L700.jpg)
 !
 ! For each image of the painting, can you identify the optical system, then specify `
-the characteristics of the various simple elements that constitute the system and their relative distances?
+! the characteristics of the various simple elements that constitute the system and their relative distances?
 !
 ! * _The resolution time is the typical expected time to be allocated to this problem if it was part of an examen for an optics certificate._ 
 ! * _The discovery time is the expected time required to prepare this challenge if you don't have practice. But take as much time as you need._