[miomio] Rename extractor

youtube_dl/extractor/__init__.py

@@ -274,7 +274,7 @@ from .mdr import MDRIE
 from .metacafe import MetacafeIE
 from .metacritic import MetacriticIE
 from .mgoon import MgoonIE
-from .miomio_tv import MiomioTvIE
+from .miomio import MioMioIE
 from .minhateca import MinhatecaIE
 from .ministrygrid import MinistryGridIE
 from .mit import TechTVMITIE, MITIE, OCWMITIE