I don’t see it…you say you started it?
I’m trying to do a similar change, but can’t seem to find which file I should be editing for this. Please assist!
I think It was the Root Relative URL plugin that automatically came with wordpress. The new message works:
Thanks for registering at Fairhaven Institute! To complete the activation of your account please click the following link:
http://www.fbcinstitute.com/login/?action=activate&key=WUcjV9e1gk0zkZRXiYVR&login=test3