correction recherche

src/agenda_culturel/filters.py

@@ -1,6 +1,9 @@
 import django_filters
 from django.utils.translation import gettext_lazy as _
 from django import forms
+from django.contrib.postgres.search import SearchQuery, SearchHeadline
+from django.db.models import Count, Q
+
 from django.http import QueryDict
 from django.contrib.gis.measure import D