When I add to my Nintex Form an html link tag (<a>) from Nintex Workflow proccess in a control Enhanced Rich Text (in Nintex form) my link appears on the form without http.

For example: I try to add a control <a href="google.com">google</a> in Nintex workflow, but when this control is added to Enhanced Rich Text  it appears as <a>google</a> 

Does anybody have an idea why this is happening?