point to base/demos repo

Author: haardikk21

docs/cookbook/base-app-coins.mdx

@@ -8,7 +8,7 @@ With the launch of Base App, users can post on the network and get paid by coini
 
 ## Overview
 
-The full code for this starter implementation can be found [here](https://github.com/haardikk21/tba-zora-coins). The guide below explains the core components, how it works, and what parts you may need to customize to your needs.
+The full code for this starter implementation can be found [here](https://github.com/base/demos/tree/master/base-app-coins). The guide below explains the core components, how it works, and what parts you may need to customize to your needs.
 
 The sample is a Bun + TypeScript project that uses `viem` for interacting with Base Chain via standard Ethereum JSON-RPC methods. It also utilizes Uniswap's SDKs to make some calculations easier.