Renamed the update>Entity Name>() functiuons to update()

ref #76

src/controllers/TrackController.ts

@@ -75,7 +75,7 @@ export class TrackController {
 		if (oldTrack.id != updateTrack.id) {
 			throw new TrackIdsNotMatchingError();
 		}
-		await this.trackRepository.save(await updateTrack.updateTrack(oldTrack));
+		await this.trackRepository.save(await updateTrack.update(oldTrack));
 
 		return new ResponseTrack(await this.trackRepository.findOne({ id: id }));
 	}