Update cheatsheet.fr.md

12.temporary_ins/44.relativity/40.n4/10.special-relativity/20.framework-of-special-relativity/20.overview/cheatsheet.fr.md

@@ -6,12 +6,17 @@ visible: false
 lessons:
     -
       slug: framework-of-special-relativity-4
-      name: LINÉAIRE : Cadre de la relativité restreinte
+      name: LINÉAIRE 4 : Cadre de la relativité restreinte
       order: 2
     -   
       slug: frameworks-of-classical-mechanics-special4-general-relativity
       name: PANORAMA : comparaison mecanique classique et relativité 44
       order: 2
+    -   
+      slug: frameworks-of-special-34-general-4-relativity
+      name: PANORAMA : Relativité 344
+      order: 2
+
 ---
 
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