tools/check-py3: Update references in output.
tools/check-py3: Update references in output.

Replace occurrences of 'py3k' by 'check-py3' in echo output.

ahmadassaf/zulip,samatdav/zulip,timabbott/zulip,susansls/zulip,KingxBanana/zulip,grave-w-grave/zulip,blaze225/zulip,sharmaeklavya2/zulip,kou/zulip,amyliu345/zulip,samatdav/zulip,tommyip/zulip,shubhamdhama/zulip,sharmaeklavya2/zulip,SmartPeople/zulip,hackerkid/zulip,brockwhittaker/zulip,jphilipsen05/zulip,jackrzhang/zulip,Frouk/zulip,jackrzhang/zulip,grave-w-grave/zulip,blaze225/zulip,Juanvulcano/zulip,ahmadassaf/zulip,showell/zulip,Juanvulcano/zulip,hackerkid/zulip,brainwane/zulip,PhilSk/zulip,niftynei/zulip,christi3k/zulip,hackerkid/zulip,aakash-cr7/zulip,Diptanshu8/zulip,timabbott/zulip,souravbadami/zulip,umkay/zulip,brockwhittaker/zulip,sonali0901/zulip,jainayush975/zulip,ahmadassaf/zulip,mahim97/zulip,souravbadami/zulip,dawran6/zulip,zulip/zulip,PhilSk/zulip,ahmadassaf/zulip,peiwei/zulip,dattatreya303/zulip,eeshangarg/zulip,j831/zulip,isht3/zulip,calvinleenyc/zulip,vaidap/zulip,mohsenSy/zulip,zulip/zulip,KingxBanana/zulip,dhcrzf/zulip,eeshangarg/zulip,eeshangarg/zulip,ryanbackman/zulip,Jianchun1/zulip,mohsenSy/zulip,sonali0901/zulip,joyhchen/zulip,TigorC/zulip,mohsenSy/zulip,synicalsyntax/zulip,AZtheAsian/zulip,SmartPeople/zulip,showell/zulip,Frouk/zulip,tommyip/zulip,mahim97/zulip,jphilipsen05/zulip,tommyip/zulip,Frouk/zulip,ahmadassaf/zulip,zacps/zulip,krtkmj/zulip,dattatreya303/zulip,vaidap/zulip,verma-varsha/zulip,sup95/zulip,Frouk/zulip,brainwane/zulip,kou/zulip,Galexrt/zulip,Vallher/zulip,brainwane/zulip,rishig/zulip,timabbott/zulip,timabbott/zulip,showell/zulip,peiwei/zulip,cosmicAsymmetry/zulip,umkay/zulip,TigorC/zulip,rishig/zulip,sharmaeklavya2/zulip,tommyip/zulip,sup95/zulip,niftynei/zulip,zacps/zulip,peiwei/zulip,ryanbackman/zulip,brainwane/zulip,sharmaeklavya2/zulip,cosmicAsymmetry/zulip,punchagan/zulip,peguin40/zulip,timabbott/zulip,SmartPeople/zulip,paxapy/zulip,ryanbackman/zulip,cosmicAsymmetry/zulip,amanharitsh123/zulip,PhilSk/zulip,KingxBanana/zulip,calvinleenyc/zulip,ryanbackman/zulip,mohsenSy/zulip,hackerkid/zulip,zacps/zulip,ryanbackman/zulip,andersk/zulip,KingxBanana/zulip,krtkmj/zulip,JPJPJPOPOP/zulip,sonali0901/zulip,jrowan/zulip,brockwhittaker/zulip,reyha/zulip,jackrzhang/zulip,shubhamdhama/zulip,paxapy/zulip,shubhamdhama/zulip,mahim97/zulip,jainayush975/zulip,kou/zulip,showell/zulip,jackrzhang/zulip,isht3/zulip,vabs22/zulip,peiwei/zulip,synicalsyntax/zulip,aakash-cr7/zulip,niftynei/zulip,arpith/zulip,TigorC/zulip,j831/zulip,punchagan/zulip,shubhamdhama/zulip,vabs22/zulip,punchagan/zulip,niftynei/zulip,susansls/zulip,TigorC/zulip,peiwei/zulip,verma-varsha/zulip,grave-w-grave/zulip,showell/zulip,dawran6/zulip,mohsenSy/zulip,rht/zulip,kou/zulip,Galexrt/zulip,shubhamdhama/zulip,dhcrzf/zulip,samatdav/zulip,shubhamdhama/zulip,blaze225/zulip,Juanvulcano/zulip,vikas-parashar/zulip,souravbadami/zulip,verma-varsha/zulip,Jianchun1/zulip,Juanvulcano/zulip,AZtheAsian/zulip,Vallher/zulip,jphilipsen05/zulip,joyhchen/zulip,calvinleenyc/zulip,christi3k/zulip,vikas-parashar/zulip,christi3k/zulip,vikas-parashar/zulip,vaidap/zulip,joyhchen/zulip,punchagan/zulip,zulip/zulip,dhcrzf/zulip,peguin40/zulip,Galexrt/zulip,christi3k/zulip,TigorC/zulip,SmartPeople/zulip,krtkmj/zulip,sharmaeklavya2/zulip,dattatreya303/zulip,arpith/zulip,Frouk/zulip,blaze225/zulip,mahim97/zulip,amanharitsh123/zulip,rht/zulip,amyliu345/zulip,souravbadami/zulip,brockwhittaker/zulip,dattatreya303/zulip,jrowan/zulip,isht3/zulip,andersk/zulip,susansls/zulip,aakash-cr7/zulip,timabbott/zulip,joyhchen/zulip,rishig/zulip,isht3/zulip,jrowan/zulip,joyhchen/zulip,verma-varsha/zulip,brainwane/zulip,jphilipsen05/zulip,kou/zulip,Diptanshu8/zulip,JPJPJPOPOP/zulip,verma-varsha/zulip,arpith/zulip,rishig/zulip,grave-w-grave/zulip,ahmadassaf/zulip,eeshangarg/zulip,krtkmj/zulip,sup95/zulip,showell/zulip,amyliu345/zulip,susansls/zulip,Vallher/zulip,rht/zulip,Diptanshu8/zulip,jackrzhang/zulip,calvinleenyc/zulip,shubhamdhama/zulip,zacps/zulip,zulip/zulip,eeshangarg/zulip,j831/zulip,ryanbackman/zulip,umkay/zulip,peguin40/zulip,punchagan/zulip,sup95/zulip,dawran6/zulip,vaidap/zulip,jackrzhang/zulip,dawran6/zulip,peiwei/zulip,Frouk/zulip,zulip/zulip,umkay/zulip,Frouk/zulip,Diptanshu8/zulip,j831/zulip,andersk/zulip,Vallher/zulip,PhilSk/zulip,synicalsyntax/zulip,dattatreya303/zulip,vikas-parashar/zulip,dattatreya303/zulip,jainayush975/zulip,krtkmj/zulip,punchagan/zulip,vabs22/zulip,hackerkid/zulip,rishig/zulip,Diptanshu8/zulip,eeshangarg/zulip,sonali0901/zulip,Jianchun1/zulip,Vallher/zulip,dawran6/zulip,jphilipsen05/zulip,sup95/zulip,andersk/zulip,reyha/zulip,amyliu345/zulip,jainayush975/zulip,sharmaeklavya2/zulip,souravbadami/zulip,brockwhittaker/zulip,paxapy/zulip,synicalsyntax/zulip,jrowan/zulip,vabs22/zulip,samatdav/zulip,cosmicAsymmetry/zulip,verma-varsha/zulip,sonali0901/zulip,kou/zulip,SmartPeople/zulip,amyliu345/zulip,andersk/zulip,punchagan/zulip,jphilipsen05/zulip,dhcrzf/zulip,vaidap/zulip,dhcrzf/zulip,blaze225/zulip,mahim97/zulip,niftynei/zulip,peguin40/zulip,samatdav/zulip,Galexrt/zulip,grave-w-grave/zulip,vabs22/zulip,synicalsyntax/zulip,Juanvulcano/zulip,JPJPJPOPOP/zulip,aakash-cr7/zulip,JPJPJPOPOP/zulip,arpith/zulip,Galexrt/zulip,synicalsyntax/zulip,zacps/zulip,susansls/zulip,amanharitsh123/zulip,Diptanshu8/zulip,AZtheAsian/zulip,brainwane/zulip,amanharitsh123/zulip,dawran6/zulip,reyha/zulip,aakash-cr7/zulip,isht3/zulip,Juanvulcano/zulip,hackerkid/zulip,amanharitsh123/zulip,PhilSk/zulip,peiwei/zulip,eeshangarg/zulip,peguin40/zulip,zacps/zulip,j831/zulip,souravbadami/zulip,christi3k/zulip,susansls/zulip,rishig/zulip,vaidap/zulip,Galexrt/zulip,peguin40/zulip,tommyip/zulip,synicalsyntax/zulip,vikas-parashar/zulip,KingxBanana/zulip,hackerkid/zulip,joyhchen/zulip,reyha/zulip,cosmicAsymmetry/zulip,cosmicAsymmetry/zulip,paxapy/zulip,samatdav/zulip,umkay/zulip,sonali0901/zulip,sup95/zulip,krtkmj/zulip,umkay/zulip,christi3k/zulip,vabs22/zulip,rht/zulip,calvinleenyc/zulip,jainayush975/zulip,calvinleenyc/zulip,rht/zulip,zulip/zulip,dhcrzf/zulip,timabbott/zulip,rht/zulip,AZtheAsian/zulip,TigorC/zulip,PhilSk/zulip,Vallher/zulip,reyha/zulip,reyha/zulip,rishig/zulip,dhcrzf/zulip,brainwane/zulip,Galexrt/zulip,grave-w-grave/zulip,j831/zulip,mohsenSy/zulip,brockwhittaker/zulip,niftynei/zulip,umkay/zulip,ahmadassaf/zulip,aakash-cr7/zulip,Vallher/zulip,jainayush975/zulip,SmartPeople/zulip,JPJPJPOPOP/zulip,mahim97/zulip,arpith/zulip,tommyip/zulip,Jianchun1/zulip,paxapy/zulip,krtkmj/zulip,Jianchun1/zulip,AZtheAsian/zulip,KingxBanana/zulip,rht/zulip,andersk/zulip,blaze225/zulip,isht3/zulip,amyliu345/zulip,jrowan/zulip,AZtheAsian/zulip,vikas-parashar/zulip,kou/zulip,JPJPJPOPOP/zulip,Jianchun1/zulip,showell/zulip,andersk/zulip,paxapy/zulip,arpith/zulip,jackrzhang/zulip,amanharitsh123/zulip,jrowan/zulip,tommyip/zulip,zulip/zulip