fix: actualize system tags test

Author: HeavyPunk

tests/models/test_system_tag.py

@@ -19,4 +19,4 @@ def test_fetch_all(self):
             system_tag_manager.fetch_all()
 
         self.assertTrue(get_mock.called)
-        get_mock.assert_called_with('tag')
+        get_mock.assert_called_with('system-tag')