docs: fix link to contribution guidelines (#2823)

Author: andrew

packages/ipfs-utils/README.md

@@ -58,7 +58,7 @@ validateAddInput(Buffer.from('test'))
 
 Contributions welcome. Please check out [the issues](https://github.com/ipfs/js-ipfs-utils/issues).
 
-Check out our [contributing document](https://github.com/ipfs/community/blob/master/contributing.md) for more information on how we work, and about contributing in general. Please be aware that all interactions related to this repo are subject to the IPFS [Code of Conduct](https://github.com/ipfs/community/blob/master/code-of-conduct.md).
+Check out our [contributing document](https://github.com/ipfs/community/blob/master/CONTRIBUTING_JS.md) for more information on how we work, and about contributing in general. Please be aware that all interactions related to this repo are subject to the IPFS [Code of Conduct](https://github.com/ipfs/community/blob/master/code-of-conduct.md).
 
 ## License