Update cheatsheet.fr.md

12.temporary_ins/32.sets-systems/30.n3/20.systems/20.overview/cheatsheet.fr.md

@@ -7,24 +7,19 @@ lessons:
     - slug: from-sets-to-systems-3
       name: PARALLÈLE : Des ensembles aux systèmes
       order: 3
-    -
-      slug: sets-to-SYSTEMS-linear-3
+    - slug: sets-to-SYSTEMS-linear-3
       name: LINÉAIRE : Systèmes
       order: 2
-    -
-      slug: systems-top-down-versus-bottom-up-3
+    - slug: systems-top-down-versus-bottom-up-3
       name: PARALLEL : Stratégie top-down ou bottom-up ?
       order: 2
-    -
-      slug: SYSTEMS-panorama-234
+    - slug: SYSTEMS-panorama-234
       name: PANORAMA 234 : Systèmes
       order: 2
-    -
-      slug: systems-classical-versus-quantum-3
+    - slug: systems-classical-versus-quantum-3
       name: PARALLEL : Systèmes classiques ou quantiques ?
       order: 2
-    -
-      slug: systems-linear-versus-non-linear-3
+    - slug: systems-linear-versus-non-linear-3
       name: PARALLEL : Systèmes linéaires ou non linéaires ?
       order: 2
 ---