doc: fixed broken link in uix/settings.py
doc: fixed broken link in uix/settings.py

xpndlabs/kivy,jehutting/kivy,youprofit/kivy,kived/kivy,matham/kivy,manashmndl/kivy,manthansharma/kivy,vitorio/kivy,aron-bordin/kivy,bhargav2408/kivy,manthansharma/kivy,kived/kivy,aron-bordin/kivy,inclement/kivy,akshayaurora/kivy,viralpandey/kivy,matham/kivy,cbenhagen/kivy,habibmasuro/kivy,VinGarcia/kivy,thezawad/kivy,kivy/kivy,akshayaurora/kivy,kivy/kivy,darkopevec/kivy,bionoid/kivy,VinGarcia/kivy,inclement/kivy,janssen/kivy,bhargav2408/kivy,janssen/kivy,Ramalus/kivy,CuriousLearner/kivy,rafalo1333/kivy,mSenyor/kivy,xiaoyanit/kivy,mSenyor/kivy,matham/kivy,jkankiewicz/kivy,jegger/kivy,matham/kivy,andnovar/kivy,jehutting/kivy,el-ethan/kivy,rnixx/kivy,jehutting/kivy,manthansharma/kivy,KeyWeeUsr/kivy,jkankiewicz/kivy,autosportlabs/kivy,rafalo1333/kivy,bliz937/kivy,tony/kivy,xpndlabs/kivy,LogicalDash/kivy,bliz937/kivy,janssen/kivy,bliz937/kivy,el-ethan/kivy,arlowhite/kivy,CuriousLearner/kivy,cbenhagen/kivy,aron-bordin/kivy,youprofit/kivy,xiaoyanit/kivy,edubrunaldi/kivy,bionoid/kivy,habibmasuro/kivy,mSenyor/kivy,LogicalDash/kivy,manashmndl/kivy,edubrunaldi/kivy,andnovar/kivy,inclement/kivy,jegger/kivy,janssen/kivy,rafalo1333/kivy,youprofit/kivy,el-ethan/kivy,xpndlabs/kivy,tony/kivy,Cheaterman/kivy,manthansharma/kivy,aron-bordin/kivy,autosportlabs/kivy,autosportlabs/kivy,manashmndl/kivy,tony/kivy,xiaoyanit/kivy,vitorio/kivy,thezawad/kivy,jkankiewicz/kivy,edubrunaldi/kivy,VinGarcia/kivy,thezawad/kivy,viralpandey/kivy,Ramalus/kivy,kivy/kivy,KeyWeeUsr/kivy,CuriousLearner/kivy,habibmasuro/kivy,jkankiewicz/kivy,bionoid/kivy,darkopevec/kivy,KeyWeeUsr/kivy,bhargav2408/kivy,Cheaterman/kivy,akshayaurora/kivy,vitorio/kivy,darkopevec/kivy,arlowhite/kivy,Cheaterman/kivy,jegger/kivy,rnixx/kivy,viralpandey/kivy,KeyWeeUsr/kivy,darkopevec/kivy,andnovar/kivy,jegger/kivy,Ramalus/kivy,Cheaterman/kivy,LogicalDash/kivy,cbenhagen/kivy,LogicalDash/kivy,bionoid/kivy,rnixx/kivy,arlowhite/kivy,kived/kivy