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

@@ -28,7 +28,7 @@ lessons:
         slug: temporary-work-axis-wave-22
         name: TRAVAIL ondes : transfert entre versions
         order: 2
-    -  
+    -
         slug: stationary-waves-and-art-fr
         name: SCIENCE-&-ART : découvre les ondes stationnaires
         order: 3