Fixes file name encoding issue

Updates the file path to ensure correct file access by addressing an encoding problem in the filename. This ensures proper linking and display of the referenced PDF document.

content/Ressources/Concepts_cognitifs/Essentiels.md

@@ -20,7 +20,7 @@ Idéal pour mieux comprendre la matrice [DIMA](https://m82-project.org/ressource
 
 ### Effet d'autorité
 
-{{< embed-pdf url="/files/essentiels/Effet d'autorité.pdf">}}
+{{< embed-pdf url="/files/essentiels/Effet_d_autorite.pdf">}}
 
 ### Effet rebond