docs: Add missing configuration step to github webhook doc.
docs: Add missing configuration step to github webhook doc.

kou/zulip,zulip/zulip,mahim97/zulip,SmartPeople/zulip,dhcrzf/zulip,souravbadami/zulip,hackerkid/zulip,jackrzhang/zulip,dhcrzf/zulip,rht/zulip,timabbott/zulip,vaidap/zulip,PhilSk/zulip,vabs22/zulip,blaze225/zulip,vaidap/zulip,synicalsyntax/zulip,Galexrt/zulip,punchagan/zulip,sonali0901/zulip,shubhamdhama/zulip,punchagan/zulip,SmartPeople/zulip,Galexrt/zulip,christi3k/zulip,kou/zulip,dawran6/zulip,rht/zulip,JPJPJPOPOP/zulip,dawran6/zulip,dhcrzf/zulip,kou/zulip,dhcrzf/zulip,dawran6/zulip,timabbott/zulip,susansls/zulip,jrowan/zulip,showell/zulip,sharmaeklavya2/zulip,blaze225/zulip,mahim97/zulip,sharmaeklavya2/zulip,brainwane/zulip,andersk/zulip,christi3k/zulip,souravbadami/zulip,punchagan/zulip,synicalsyntax/zulip,christi3k/zulip,ryanbackman/zulip,aakash-cr7/zulip,synicalsyntax/zulip,amanharitsh123/zulip,synicalsyntax/zulip,j831/zulip,punchagan/zulip,showell/zulip,j831/zulip,sonali0901/zulip,shubhamdhama/zulip,PhilSk/zulip,j831/zulip,mahim97/zulip,JPJPJPOPOP/zulip,jphilipsen05/zulip,dhcrzf/zulip,rht/zulip,amanharitsh123/zulip,vabs22/zulip,shubhamdhama/zulip,dhcrzf/zulip,samatdav/zulip,dawran6/zulip,jainayush975/zulip,verma-varsha/zulip,tommyip/zulip,sonali0901/zulip,susansls/zulip,SmartPeople/zulip,kou/zulip,vaidap/zulip,j831/zulip,mahim97/zulip,brainwane/zulip,samatdav/zulip,brockwhittaker/zulip,zulip/zulip,dattatreya303/zulip,vaidap/zulip,synicalsyntax/zulip,tommyip/zulip,jackrzhang/zulip,rishig/zulip,brockwhittaker/zulip,JPJPJPOPOP/zulip,brockwhittaker/zulip,zulip/zulip,jphilipsen05/zulip,JPJPJPOPOP/zulip,jackrzhang/zulip,showell/zulip,eeshangarg/zulip,andersk/zulip,sharmaeklavya2/zulip,jrowan/zulip,sonali0901/zulip,eeshangarg/zulip,jainayush975/zulip,jphilipsen05/zulip,blaze225/zulip,dattatreya303/zulip,jainayush975/zulip,Galexrt/zulip,rishig/zulip,rishig/zulip,rht/zulip,rht/zulip,kou/zulip,zulip/zulip,verma-varsha/zulip,dattatreya303/zulip,eeshangarg/zulip,verma-varsha/zulip,blaze225/zulip,tommyip/zulip,vabs22/zulip,jrowan/zulip,andersk/zulip,zulip/zulip,samatdav/zulip,jrowan/zulip,aakash-cr7/zulip,amanharitsh123/zulip,PhilSk/zulip,punchagan/zulip,christi3k/zulip,sharmaeklavya2/zulip,hackerkid/zulip,andersk/zulip,ryanbackman/zulip,brainwane/zulip,punchagan/zulip,souravbadami/zulip,timabbott/zulip,eeshangarg/zulip,tommyip/zulip,aakash-cr7/zulip,showell/zulip,dattatreya303/zulip,jackrzhang/zulip,hackerkid/zulip,jainayush975/zulip,eeshangarg/zulip,kou/zulip,andersk/zulip,jackrzhang/zulip,tommyip/zulip,verma-varsha/zulip,j831/zulip,SmartPeople/zulip,Galexrt/zulip,jainayush975/zulip,andersk/zulip,susansls/zulip,sharmaeklavya2/zulip,susansls/zulip,souravbadami/zulip,showell/zulip,ryanbackman/zulip,kou/zulip,ryanbackman/zulip,brockwhittaker/zulip,Galexrt/zulip,jrowan/zulip,amanharitsh123/zulip,susansls/zulip,dattatreya303/zulip,dawran6/zulip,jainayush975/zulip,JPJPJPOPOP/zulip,samatdav/zulip,ryanbackman/zulip,vabs22/zulip,hackerkid/zulip,brainwane/zulip,Galexrt/zulip,blaze225/zulip,mahim97/zulip,rht/zulip,timabbott/zulip,SmartPeople/zulip,samatdav/zulip,shubhamdhama/zulip,aakash-cr7/zulip,jrowan/zulip,rishig/zulip,samatdav/zulip,souravbadami/zulip,blaze225/zulip,brainwane/zulip,andersk/zulip,tommyip/zulip,showell/zulip,eeshangarg/zulip,mahim97/zulip,vabs22/zulip,jphilipsen05/zulip,rishig/zulip,christi3k/zulip,dhcrzf/zulip,showell/zulip,amanharitsh123/zulip,timabbott/zulip,sonali0901/zulip,dawran6/zulip,eeshangarg/zulip,jackrzhang/zulip,sonali0901/zulip,rht/zulip,vabs22/zulip,jphilipsen05/zulip,shubhamdhama/zulip,PhilSk/zulip,timabbott/zulip,hackerkid/zulip,rishig/zulip,dattatreya303/zulip,ryanbackman/zulip,vaidap/zulip,susansls/zulip,j831/zulip,brockwhittaker/zulip,verma-varsha/zulip,hackerkid/zulip,shubhamdhama/zulip,souravbadami/zulip,JPJPJPOPOP/zulip,aakash-cr7/zulip,PhilSk/zulip,synicalsyntax/zulip,shubhamdhama/zulip,synicalsyntax/zulip,tommyip/zulip,verma-varsha/zulip,amanharitsh123/zulip,christi3k/zulip,Galexrt/zulip,SmartPeople/zulip,brainwane/zulip,jackrzhang/zulip,jphilipsen05/zulip,rishig/zulip,PhilSk/zulip,zulip/zulip,punchagan/zulip,brockwhittaker/zulip,hackerkid/zulip,timabbott/zulip,brainwane/zulip,zulip/zulip,vaidap/zulip,sharmaeklavya2/zulip,aakash-cr7/zulip