Typo fix : developped ⮞ developed

Author: Levure

setup.rst

@@ -35,7 +35,7 @@ requirements. Open your console terminal and run this command:
 
 .. note::
 
-    The Symfony binary is developped internally at Symfony. If you want to
+    The Symfony binary is developed internally at Symfony. If you want to
     report a bug or suggest a new feature, please create an issue on
     `symfony/cli`_.