Update week8-research.md

Replace RIG website address

docs/eps/week8-research.md

@@ -13,7 +13,7 @@ Before starting with the week 8 development content, make yourself familiar with
 Additionally, you can get ready by studying the following resources:
 
 - [MEV basics](https://ethereum.org/en/developers/docs/mev/)
-- [RIG projects](https://ethereum.github.io/rig/)
+- [RIG projects](https://rig.ethereum.org/)
 - [Wiki on MEV and PBS](https://github.com/eth-protocol-fellows/protocol-studies/tree/pbs/docs/wiki/research/PBS)
 
 ## Outline
@@ -26,4 +26,4 @@ Additionally, you can get ready by studying the following resources:
 ## Additional reading and exercises 
 
 - [Rig Open Problems](https://efdn.notion.site/RIG-Open-Problems-ROPs-c11382c213f949a4b89927ef4e962adf)
-- [Censorship stats](https://dotpics.info/)
+- [Censorship stats](https://dotpics.info/)