fixing async test for module list

Author: chayim

tests/test_asyncio/test_commands.py

@@ -2986,7 +2986,8 @@ async def test_memory_usage(self, r: redis.Redis):
     @pytest.mark.onlynoncluster
     async def test_module_list(self, r: redis.Redis):
         assert isinstance(await r.module_list(), list)
-        assert not await r.module_list()
+        for x in await r.module_list():
+            assert isinstance(x, dict)
 
 
 @pytest.mark.onlynoncluster