If you never want to open the contacts in Alfred, go to Alfred's Preferences, under Features > Contacts, just uncheck the box that says "Open Contacts in Alfred" and the contact will automatically open in the Contacts app itself.
If alternatively, you just want to sometimes open in Contacts and sometimes in Alfred, leave the box above ticked. Instead of pressing the return key when you find your contact, do Cmd + O to open it in Contacts app
