[Beatport] Update extractor name and tests

youtube_dl/extractor/extractors.py

@@ -94,7 +94,7 @@ from .bbc import (
 from .beeg import BeegIE
 from .behindkink import BehindKinkIE
 from .bellmedia import BellMediaIE
-from .beatportpro import BeatportProIE
+from .beatport import BeatportIE
 from .bet import BetIE
 from .bigflix import BigflixIE
 from .bild import BildIE