[megavideozeu] Rename extractor

youtube_dl/extractor/__init__.py

@@ -274,7 +274,7 @@ from .macgamestore import MacGameStoreIE
 from .mailru import MailRuIE
 from .malemotion import MalemotionIE
 from .mdr import MDRIE
-from .megavideozeu import MegavideozeuIE
+from .megavideoz import MegaVideozIE
 from .metacafe import MetacafeIE
 from .metacritic import MetacriticIE
 from .mgoon import MgoonIE