docs: add example for multi-threaded proving

Author: saleel

barretenberg/ts/README.md

@@ -113,7 +113,7 @@ const { Barretenberg, RawBuffer, Crs } = await import('@aztec/bb.js');
 
 Multithreading in bb.js requires [`SharedArrayBuffer`](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/SharedArrayBuffer) to be enabled. It is only enabled in browsers if COOP and COEP headers are set by the server. Read more [here](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/SharedArrayBuffer#security_requirements).
 
-You can configure your server to set these headers for pages that perform proof generation. Here is an example for NextJS:
+You can configure your server to set these headers for pages that perform proof generation. See [this example project](https://github.com/saleel/gitclaim/blob/main/app/next.config.mjs#L48-L67) that implements multi-threaded browser proving, which contains the below Next.js config:
 
 ```typescript
 {