Update README.md

Signed-off-by: Joseph Garrone <joseph.garrone.gj@gmail.com>

Author: garronej

README.md

@@ -28,7 +28,7 @@
 
 👉 Version française du README [ici](https://github.com/codegouvfr/react-dsfr/blob/main/README.fr.md).
 
-> WARNING: This Design System is only meant to be used for official French's public service websites and apps.  
+> WARNING: This Design System is only meant to be used for official French's public service websites.  
 > Its main purpose is to make it easy to identify governmental websites for citizens. [See terms](https://www.systeme-de-design.gouv.fr/cgu/).
 
 > 🗣️ Replay de l'atelier de présentation de la librairie [ici](https://bbb-dinum-scalelite.visio.education.fr/playback/presentation/2.3/22298bc9d93b53540248207bc3f9e31260f3b4f1-1670578779094).