Update test/plugins/test_discogs.py

Co-authored-by: Šarūnas Nejus <snejus@protonmail.com>

Author: jdoe29103

test/plugins/test_discogs.py

@@ -483,8 +483,8 @@ def test_default_search_filters_without_extra_tags(self):
 
     def test_extra_tags_populate_discogs_filters(self):
         """Configured extra_tags should populate Discogs search filters."""
-        config["discogs"]["extra_tags"] = ["label", "catalognum"]
         plugin = DiscogsPlugin()
+        plugin.config["extra_tags"] = ["label", "catalognum"]
 
         items = [
             Item(catalognum="ABC 123", label="abc"),