Update README.md

Author: Fernando Martinelli

guides/hackathons/README.md

@@ -8,7 +8,7 @@ For an introduction and overview we recommend taking the time to read through th
 
 * [Understanding Balancer](https://medium.com/@arnauramiomateu/understanding-balancer-protocol-frmo-0-to-100-998ba20c6834)
 * [Balancer Website](https://balancer.finance/)
-* [White Paper](https://balancer.finance/whitepaper/)
+* [Balancer V1 Whitepaper](https://balancer.finance/whitepaper/)
 * [Balancer Blog](https://medium.com/balancer-protocol)
 * [Building On Balancer Video Intro](https://www.youtube.com/watch?v=HTk_H4ERya8&feature=youtu.be)
 * [Building a Balancer app with Create Eth App](https://twitter.com/PaulRBerg/status/1329937745012252674)