Merge pull request #5

Cookbook: added link to the xExchange's Pair ABI

cookbook/src/introduction.md

@@ -2,7 +2,7 @@ NovaX is more than just a toolkit—it's your bridge to the dynamic world of Mul
 
 In this guide, we'll embark on a journey to unlock the full potential of NovaX. From querying to calling, from deploying contracts to fine-tuning the user experience, we've got it all covered. Whether you're new to NovaX or looking to master its advanced features, this tutorial will provide you with the insights and hands-on techniques you need.
 
-Throughout this cookbook, we'll utilize examples based on the `xExchange` ABIs. These ABIs serve as practical references to demonstrate NovaX's powerful features in real-world scenarios. You can access and download the `xExchange` ABIs from the following link: [xExchange ABIs (Link not available yet)](#).
+Throughout this cookbook, we'll utilize examples based on the `xExchange` ABIs. These ABIs serve as practical references to demonstrate NovaX's powerful features in real-world scenarios. You can access and download the `xExchange` ABIs from the following link: [xExchange Pair ABI](https://github.com/gfusee/novax/blob/main/.novax/abis/pair.abi.json).
 
 Get ready to elevate your blockchain development experience with NovaX!