Update 129-ai-representation/ai-representation.md

Co-authored-by: Michał Krassowski <[email protected]>

Author: mlucool

129-ai-representation/ai-representation.md

@@ -94,7 +94,7 @@ The registry should be free of any dependency to minimize conflicts.
 
 Both the registry and repr on objects are intended to be fully backwards compatible.
 
-#### Messaging Protocol
+### Messaging Protocol
 
 A new message type, `ai_repr_request`, allows the frontend to retrieve representations dynamically. The content of a `ai_repr_request` message includes the following: