Update...

Update 10.temporary-m3p2/16.waves/20.n2/10.concept-of-wave-and-wave-phenomena-2/20.overview/cheatsheet.fr.md

10.temporary-m3p2/16.waves/20.n2/10.concept-of-wave-and-wave-phenomena-2/20.overview/cheatsheet.fr.md

@@ -4,6 +4,10 @@ published: true
 routable: true
 visible: false
 lessons:
+    -
+        slug: waves-1-situation-fr
+        name: SITUATION-1 : les ondes
+        order: 2
     -
       slug: waves-2-fr
       name: SITUATION-2 : Les Ondes