Update custom-signup.md
Update custom-signup.md
hamzawi06/docs,Annyv2/docs,jeffreylees/docs,hamzawi06/docs,auth0/docs,sandrinodimattia/docs,Catografix/docs,sandrinodimattia/docs,jeffreylees/docs,yvonnewilson/docs,sandrinodimattia/docs,khorne3/docs,Catografix/docs,auth0/docs,yvonnewilson/docs,Annyv2/docs,khorne3/docs,khorne3/docs,auth0/docs,hamzawi06/docs,yvonnewilson/docs,jeffreylees/docs,miparnisari/docs,Annyv2/docs,Catografix/docs