Update security/guard_authentication.rst

Co-Authored-By: Antoine Makdessi <[email protected]>

Author: ThomasLandauer

security/guard_authentication.rst

@@ -63,7 +63,7 @@ Next, configure your "user provider" to use this new `apiKey` property:
                 your_db_provider:
                     entity:
                         class: App\Entity\User
-                        property: apiKey
+                        property: apiToken
 
             # ...