Link custom user field to user's profile URL in external website

[techAPJ (Arpit Jalan)]

@techAPJ

I will try to fix and verify that guide tomorrow.

Guide is updated.

@LeoMcA

https://github.com/LeoMcA/namati-user-card-profile-theme · GitHub

Awesome! I just made the guide wiki, so feel free to improve it further as you see fit.