docs: Update quickstart section on thread safety
docs: Update quickstart section on thread safety

kotamat/pyspotify,mopidy/pyspotify,felix1m/pyspotify,felix1m/pyspotify,kotamat/pyspotify,jodal/pyspotify,felix1m/pyspotify,jodal/pyspotify,kotamat/pyspotify,jodal/pyspotify,mopidy/pyspotify