Fix typo in switch_to documentation
Fix typo in switch_to documentation

`switch()` method doesn't exists. seems like it was a typo.
arcticshores/kivy,viralpandey/kivy,LogicalDash/kivy,bhargav2408/kivy,cbenhagen/kivy,matham/kivy,habibmasuro/kivy,autosportlabs/kivy,Ramalus/kivy,inclement/kivy,kived/kivy,bionoid/kivy,CuriousLearner/kivy,janssen/kivy,aron-bordin/kivy,bob-the-hamster/kivy,CuriousLearner/kivy,LogicalDash/kivy,thezawad/kivy,inclement/kivy,Ramalus/kivy,Shyam10/kivy,manthansharma/kivy,Cheaterman/kivy,el-ethan/kivy,tony/kivy,bionoid/kivy,matham/kivy,dirkjot/kivy,andnovar/kivy,Farkal/kivy,MiyamotoAkira/kivy,habibmasuro/kivy,angryrancor/kivy,bhargav2408/kivy,edubrunaldi/kivy,bionoid/kivy,vitorio/kivy,xiaoyanit/kivy,el-ethan/kivy,iamutkarshtiwari/kivy,viralpandey/kivy,akshayaurora/kivy,gonzafirewall/kivy,manashmndl/kivy,tony/kivy,dirkjot/kivy,rafalo1333/kivy,habibmasuro/kivy,LogicalDash/kivy,jkankiewicz/kivy,youprofit/kivy,adamkh/kivy,aron-bordin/kivy,vitorio/kivy,rafalo1333/kivy,yoelk/kivy,MiyamotoAkira/kivy,edubrunaldi/kivy,bhargav2408/kivy,bob-the-hamster/kivy,viralpandey/kivy,bliz937/kivy,yoelk/kivy,angryrancor/kivy,vipulroxx/kivy,kivy/kivy,thezawad/kivy,arcticshores/kivy,matham/kivy,arlowhite/kivy,bliz937/kivy,kived/kivy,bob-the-hamster/kivy,darkopevec/kivy,jffernandez/kivy,ernstp/kivy,dirkjot/kivy,janssen/kivy,manashmndl/kivy,KeyWeeUsr/kivy,ernstp/kivy,jffernandez/kivy,xiaoyanit/kivy,Cheaterman/kivy,jkankiewicz/kivy,angryrancor/kivy,kivy/kivy,Shyam10/kivy,gonzafirewall/kivy,manashmndl/kivy,rnixx/kivy,jehutting/kivy,rnixx/kivy,darkopevec/kivy,xiaoyanit/kivy,MiyamotoAkira/kivy,andnovar/kivy,tony/kivy,LogicalDash/kivy,Cheaterman/kivy,VinGarcia/kivy,iamutkarshtiwari/kivy,vipulroxx/kivy,JohnHowland/kivy,yoelk/kivy,aron-bordin/kivy,el-ethan/kivy,autosportlabs/kivy,denys-duchier/kivy,JohnHowland/kivy,MiyamotoAkira/kivy,darkopevec/kivy,vipulroxx/kivy,iamutkarshtiwari/kivy,angryrancor/kivy,KeyWeeUsr/kivy,jffernandez/kivy,akshayaurora/kivy,rafalo1333/kivy,xpndlabs/kivy,manthansharma/kivy,vipulroxx/kivy,CuriousLearner/kivy,JohnHowland/kivy,janssen/kivy,jkankiewicz/kivy,janssen/kivy,edubrunaldi/kivy,jegger/kivy,Farkal/kivy,matham/kivy,manthansharma/kivy,autosportlabs/kivy,Shyam10/kivy,youprofit/kivy,arlowhite/kivy,mSenyor/kivy,adamkh/kivy,ernstp/kivy,ernstp/kivy,andnovar/kivy,Cheaterman/kivy,denys-duchier/kivy,jegger/kivy,darkopevec/kivy,VinGarcia/kivy,denys-duchier/kivy,arlowhite/kivy,denys-duchier/kivy,KeyWeeUsr/kivy,youprofit/kivy,jegger/kivy,dirkjot/kivy,xpndlabs/kivy,cbenhagen/kivy,arcticshores/kivy,aron-bordin/kivy,jffernandez/kivy,bionoid/kivy,adamkh/kivy,mSenyor/kivy,kived/kivy,jegger/kivy,yoelk/kivy,thezawad/kivy,arcticshores/kivy,KeyWeeUsr/kivy,inclement/kivy,Shyam10/kivy,adamkh/kivy,rnixx/kivy,vitorio/kivy,bob-the-hamster/kivy,gonzafirewall/kivy,Farkal/kivy,Farkal/kivy,jkankiewicz/kivy,manthansharma/kivy,akshayaurora/kivy,bliz937/kivy,VinGarcia/kivy,kivy/kivy,gonzafirewall/kivy,jehutting/kivy,jehutting/kivy,Ramalus/kivy,xpndlabs/kivy,JohnHowland/kivy,cbenhagen/kivy,mSenyor/kivy