Registration system doesn't populate the `site_domain` link

[tudorbarascu]

Checklist

• I've searched through the existing issues and this bug has never been reported before

Subject of the issue

Dear administrator,

a new user has registered, to activate the new user, follow or copy the link in your browser:

https://example.com/en/users/update/131/

Steps to reproduce

1. Use registration system
2. Link when a new user registers looks like this (example should be replaced with site domain)

Dear administrator,

a new user has registered, to activate the new user, follow or copy the link in your browser:

https://example.com/en/users/update/131/

Environment

• g3w-admin: 3.8.5

Link to your project

No response

Additional info

No response

[wlorenzetti]

@tudorbarascu I'll check it very soon thanks for reporting!