notifications: Update digest email link URLs to use realm.uri.
notifications: Update digest email link URLs to use realm.uri.

This is preparation for fully supporting each realm having its own
subdomain in Zulip.

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