Update test_mm_plugin.py

tests/data/test_mm_plugin.py

@@ -11,6 +11,7 @@
 # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 # See the License for the specific language governing permissions and
 # limitations under the License.
+
 import os
 from typing import TYPE_CHECKING, Any, Dict, List, Sequence, Tuple