docs: Fix grammar
docs: Fix grammar

jcass77/mopidy,adamcik/mopidy,diandiankan/mopidy,bencevans/mopidy,jodal/mopidy,dbrgn/mopidy,tkem/mopidy,pacificIT/mopidy,quartz55/mopidy,hkariti/mopidy,diandiankan/mopidy,rawdlite/mopidy,jcass77/mopidy,tkem/mopidy,adamcik/mopidy,SuperStarPL/mopidy,diandiankan/mopidy,rawdlite/mopidy,ZenithDK/mopidy,pacificIT/mopidy,swak/mopidy,bencevans/mopidy,bacontext/mopidy,vrs01/mopidy,diandiankan/mopidy,jodal/mopidy,ali/mopidy,jmarsik/mopidy,dbrgn/mopidy,mokieyue/mopidy,mokieyue/mopidy,quartz55/mopidy,kingosticks/mopidy,tkem/mopidy,mopidy/mopidy,vrs01/mopidy,dbrgn/mopidy,pacificIT/mopidy,bacontext/mopidy,glogiotatidis/mopidy,bacontext/mopidy,ZenithDK/mopidy,glogiotatidis/mopidy,jcass77/mopidy,ZenithDK/mopidy,glogiotatidis/mopidy,hkariti/mopidy,mokieyue/mopidy,ali/mopidy,ali/mopidy,quartz55/mopidy,bencevans/mopidy,vrs01/mopidy,ZenithDK/mopidy,SuperStarPL/mopidy,rawdlite/mopidy,pacificIT/mopidy,hkariti/mopidy,mokieyue/mopidy,kingosticks/mopidy,jmarsik/mopidy,dbrgn/mopidy,glogiotatidis/mopidy,mopidy/mopidy,jodal/mopidy,SuperStarPL/mopidy,vrs01/mopidy,swak/mopidy,bacontext/mopidy,swak/mopidy,mopidy/mopidy,kingosticks/mopidy,ali/mopidy,tkem/mopidy,hkariti/mopidy,adamcik/mopidy,jmarsik/mopidy,swak/mopidy,quartz55/mopidy,jmarsik/mopidy,bencevans/mopidy,SuperStarPL/mopidy,rawdlite/mopidy