Client Diversity Page Update

Author: arredr2

public/content/developers/docs/nodes-and-clients/client-diversity/index.md

@@ -80,6 +80,8 @@ Addressing client diversity requires more than individual users to choose minori
 
 [Prysm](https://docs.prylabs.network/docs/getting-started)
 
+[Grandine](https://docs.grandine.io/)
+
 Technical users can help accelerate this process by writing more tutorials and documentation for minority clients and encouraging their node-operating peers to migrate away from the dominant clients. Guides for switching to a minority consensus client are available on [clientdiversity.org](https://clientdiversity.org/).
 
 ## Client diversity dashboards {#client-diversity-dashboards}