Update website/src/pages/en/subgraphs/guides/agent0.mdx

Co-authored-by: Benoît Rouleau <1059139+benface@users.noreply.github.com>

Author: brandonleekramer

website/src/pages/en/subgraphs/guides/agent0.mdx

@@ -74,7 +74,7 @@ curl -X POST \
   https://gateway.thegraph.com/api/<API_KEY>/subgraphs/id/<SUBGRAPH_ID>
 ```
 
-**TypeScript**
+#### TypeScript
 
 ```typescript
 const res = await fetch(