Update annex.en.md

01.curriculum/01.physics-chemistry-biology/03.niv3/02.geometrical-optics/05.paraxial-optics/03.physical-system-versus-optical-system/03.new-course-beyond/annex.en.md

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 title: 'new course : beyond'
 media_order: 'syst-physique-syst-optique.gif,lentille-boule-transparence.jpg,lentille-boule-2-reflexions.jpg,lentille-boule-seule.jpg'
 published: true
-visible: true
+routable: true
+visible: false
 ---
 
 ! *YOUR  CHALLENGE*  :  An object (a painting), a physical system (a lensball), how many scenarios and optical systems?