How to change part of html body in flutter

Question

maybe somone know how to use html adress hidding like this, i have rest api who response as Map<String, dynamic> with two variables, title and content. Variable content have all code inside and part of this code is a hidden link like below 'google-link' in postman i can follow link using ctrl+click but when i use Html widget in vsc with onLinkTap, he build page for me but when i try to use hyperlink debug console give info back '/google-link' is null

 <a title=\"Google\" href=\"/google-link\"><img src=\"https://www.speedtest.pl/wiadomosci/wp-content/uploads/2016/11/google-logo.jpg\"

My question is how can i change body from this rest api from '/google-link' to 'https://www.google.com" and make this hyperlink working? or maybe is better way to do this? thanks!