Login Link Question

Hello, 

I have a custom login link set up to log into wp admin for security reasons. However after I installed wpforo, when someone registers and they receive the password link on their email, the email has the custom login url link. I wanted to keep that hidden and do not want regular subscribers to know about it. Is there any way to do this? For example lets say my website custom login link is https://www.abc.com/customlogin 

When someone registers and gets the password link, it shows up in their email as https://www.abc.com/customlogin?action=rp…….

Any way to mask/hide the custom login?