docs: update supported frameworks to be links

Author: KwintenP

Supported_frameworks.md

@@ -4,6 +4,6 @@ The following is a list of frameworks that we have actively tested and are suppo
 
 PS: if you wanna add a framework to this list, feel free to help us out and follow the steps [here](Add_support_for_a_framework.md)!
 
-1. NextJS
-2. NestJS - Open https://stackblitz.com/github/nestjs/typescript-starter to import the TypeScript starter from NestJS
+1. [NextJS](https://stackblitz.com/fork/nextjs)
+2. [NestJS](https://stackblitz.com/fork/nestjs-starter)