Update docs/reference/python/topic/topic-subscribe.mdx

Author: davemooreuws

docs/reference/python/topic/topic-subscribe.mdx

@@ -8,6 +8,7 @@ description: "Reference for Nitric's Python library - Subscribe a handler to a t
   This is reference documentation for the Nitric Python SDK. To learn about
   Topics and Pub/Sub in Nitric start with the [Async Messaging
   docs](/messaging#topics).
+</Note>
 
 Subscribes to a topic.