Update annex.fr.md

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

@@ -152,8 +152,8 @@ Sont proposées les catégories suivantes, mais à débattre, toutes les idées
 ! 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 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._
+! * _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._
 !
 ! <\details>
 ! <details markdown=1>
@@ -171,7 +171,6 @@ Sont proposées les catégories suivantes, mais à débattre, toutes les idées
 ! <summary>
 ! What is the optical system giving the image of the painting?
 ! </summary>
-!
 ! * The optical system is composed of two spherical refracting surfaces, centered on the same optical axis.
 ! </details>
 ! <details markdown=1>
@@ -179,14 +178,11 @@ Sont proposées les catégories suivantes, mais à débattre, toutes les idées
 ! How do you characterize each of the single optical elements that make up this optical system, 
 ! and their relative distances?
 ! </summary>
-!
 ! * The optical axis is oriented positively in the direction of light propagation 
 ! (from the painting towards the lensball).
-!
 ! * The first spherical refracting surface $`DS1`$ encountered by the light has
 ! the follwing characteristics :<br>
 ! $`\overline{S_1C_1}=+|R|=+5\;cm`$ , $`n_{ini}=1`$ and $`n_{fin}=1.5`$
-!
 ! * The second spherical refracting surface $DS2$ encountered by the light has the follwing characteristics :<br>
 ! $`\overline{S_2C_2}=-|R|=-5\;cm`$ , $`n_{ini}=1.5`$ and $`n_{fin}=1`$
 !