updated admin headers

site_ecole/site_ecole/urls.py

@@ -1,6 +1,10 @@
 from django.contrib import admin
 from django.urls import path, include
 
+admin.site.site_header = "Administration des évènements"
+admin.site.site_title = "Évènements"
+admin.site.index_title = "Administration des évènements"
+
 urlpatterns = [
     path('', include("repas.urls")),
     path('admin/', admin.site.urls),