Fix CinderPolicy plural name (#22675)

src/olympia/abuse/admin.py

@@ -394,7 +394,6 @@ class CinderPolicyAdmin(AMOModelAdmin):
     ordering = ('parent__name', 'name')
     list_select_related = ('parent',)
     view_on_site = False
-    verbose_name_plural = 'Cinder Policies'
 
     def has_add_permission(self, request):
         return False

src/olympia/abuse/models.py

@@ -886,6 +886,9 @@ class CinderPolicy(ModelBase):
             parts.append(f': {canned_response_text}')
         return ''.join(parts)
 
+    class Meta:
+        verbose_name_plural = 'Cinder Policies'
+
 
 class CinderDecision(ModelBase):
     action = models.PositiveSmallIntegerField(choices=DECISION_ACTIONS.choices)