Update index.md

Author: Dreamsorcerer

content/pages/index.md

@@ -8,7 +8,8 @@ We are a co-operative of developers who maintain open-source libraries for the P
 
 Asyncio would not be possible without our amazing sponsors. Please consider joining them to help fund our work. Our finances are entirely transparent and managed by [Open Collective](https://opencollective.com/aio-libs).
 
-{% sponsors %}
+{% sponsors gold %}
+{% sponsors silver %}
 
 ### Asyncio Cooperative (Totally Fictional)