scrobbler: Fix the call to get the album title

The method is get_album, not get album_title.

Follow-up fix for bebda576.
3 jobs for wip/mschraal/album-scrobbling in 21 minutes and 35 seconds (queued for 13 minutes and 57 seconds)
Status Job ID Name Coverage
  Check
passed #6808
pep8

00:04:41

passed #6807
pyflakes

00:05:29

 
  Build
passed #6809
build

00:11:24