Added notes about custom domain names (#1560)
Added notes about custom domain names (#1560)

* Added notes about custom domain names

* Update applications.md

Annyv2/docs,yvonnewilson/docs,jeffreylees/docs,yvonnewilson/docs,Catografix/docs,Catografix/docs,yvonnewilson/docs,khorne3/docs,jeffreylees/docs,khorne3/docs,hamzawi06/docs,hamzawi06/docs,sandrinodimattia/docs,sandrinodimattia/docs,Annyv2/docs,auth0/docs,auth0/docs,jeffreylees/docs,sandrinodimattia/docs,hamzawi06/docs,Catografix/docs,Annyv2/docs,auth0/docs,khorne3/docs