Translate /getting-started/quick-start.md, Ember 5.11

[BlueCutOfficial]

Please assign yourself to the issue or let a comment at the very moment you start the translation.

File: guides/getting-started/quick-start.md
From Ember: 5.4
To Ember: 5.11

In the snippet below, you can see what changes were done in the latest English documentation. The purpose of this issue is to adjust the French translation to match the new version:

diff --git a/guides/getting-started/quick-start.md b/guides/getting-started/quick-start.md
index 5b723cfa5..a621c7933 100644
--- a/guides/getting-started/quick-start.md
+++ b/guides/getting-started/quick-start.md
@@ -51,7 +51,7 @@ Let's make sure everything is working properly.
 
 bash
 cd ember-quickstart
-ember serve
+npm start
 
 
 After a few seconds, you should see output that looks like this: