Fix Running Length label translation in AlbumViewWidget
The Running Length in https://gitlab.gnome.org/GNOME/gnome-music/blob/master/gnomemusic/widgets/albumwidget.py#L277 should:
- Be spelled in full: minute(s)
- Allow plural form: minute/minutes
The Running Length in https://gitlab.gnome.org/GNOME/gnome-music/blob/master/gnomemusic/widgets/albumwidget.py#L277 should: