Use b'' in discogs medium query regex
Use b'' in discogs medium query regex

Since the first arg to `re.sub()` is bytes, thus must be the
replacement string.

diego-plan9/beets,ibmibmibm/beets,MyTunesFreeMusic/privacy-policy,beetbox/beets,ibmibmibm/beets,xsteadfastx/beets,mosesfistos1/beetbox,ibmibmibm/beets,SusannaMaria/beets,sampsyo/beets,pkess/beets,pkess/beets,jackwilsdon/beets,artemutin/beets,lengtche/beets,shamangeorge/beets,sampsyo/beets,madmouser1/beets,SusannaMaria/beets,sampsyo/beets,diego-plan9/beets,beetbox/beets,Kraymer/beets,artemutin/beets,mosesfistos1/beetbox,beetbox/beets,shamangeorge/beets,SusannaMaria/beets,lengtche/beets,xsteadfastx/beets,mosesfistos1/beetbox,beetbox/beets,pkess/beets,jackwilsdon/beets,madmouser1/beets,shamangeorge/beets,shamangeorge/beets,artemutin/beets,Kraymer/beets,ibmibmibm/beets,mosesfistos1/beetbox,lengtche/beets,artemutin/beets,diego-plan9/beets,MyTunesFreeMusic/privacy-policy,jackwilsdon/beets,Kraymer/beets,pkess/beets,sampsyo/beets,lengtche/beets,MyTunesFreeMusic/privacy-policy,xsteadfastx/beets,diego-plan9/beets,Kraymer/beets,madmouser1/beets,madmouser1/beets,SusannaMaria/beets,MyTunesFreeMusic/privacy-policy,jackwilsdon/beets,xsteadfastx/beets