Update annex.en.md

01.curriculum/01.physics-chemistry-biology/03.niv3/02.geometrical-optics/05.paraxial-optics/02.paraxial-optics-simple-elements/03.lens/03.lens-beyond/annex.en.md

@@ -200,7 +200,7 @@ media_order: 'lentille-boule-orleans-1bis.jpg,lensball-brut-820-760.jpg,Einstein
 ! $`=\dfrac  {arctan\left(\frac{-0.017}{-0.175}\right)} {arctan\left(\frac{90}{-400}\right)}`$
 ! $`=\dfrac{0.097}{-0.221}=-0.44`$
 !
-!![](lentille-boule-orleans-1bis.jpg)<br>
+! ![](lentille-boule-orleans-1bis.jpg)<br>
 ! _Cathedral of Orleans (France)_
 ! </details>
 ! </details>