Fix 'other_admin' test

Author: macro1

simple_history/tests/other_admin.py

@@ -2,6 +2,6 @@
 from simple_history.admin import SimpleHistoryAdmin
 from .models import State
 
-site = AdminSite(name="other_admin", app_name="other_admin")
+site = AdminSite(name="other_admin")
 
 site.register(State, SimpleHistoryAdmin)

simple_history/tests/tests/test_admin.py

@@ -192,4 +192,5 @@ def test_other_admin(self):
         """
         self.login()
         state = State.objects.create()
-        self.app.get(get_history_url(state, site="other_admin"))
+        history_url = get_history_url(state, site="other_admin")
+        self.app.get(history_url)