[medialaan] Fix and improve extraction (closes #11912)

youtube_dl/extractor/extractors.py

@@ -1174,7 +1174,7 @@ from .voxmedia import VoxMediaIE
 from .vporn import VpornIE
 from .vrt import VRTIE
 from .vrak import VrakIE
-from .vtm import VTMIE
+from .medialaan import MedialaanIE
 from .vube import VubeIE
 from .vuclip import VuClipIE
 from .vvvvid import VVVVIDIE