char webpage[] PROGMEM = R"=="==(
<html>
<head>
<script src="https://cdnjs.cloudflare.com/ajax/libs/svg.js/2.6.6/svg.min.js"></script>
</head>
<body>
</body>
</html>
)=="==";
inspired by answer provided by @jsotola if i used the syntax like this R"=="==()=="==" the link will become inside the quote. and hence the ide's complier regards it as a string and won't think // is comment and now the code can complie and the link works.