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

@@ -95,7 +95,7 @@ const res = await fetch(
 const { data } = await res.json();
 ```
 
-**Python**
+#### Python
 
 ```python
 import requests