Update caching.mdx

Author: kathayl

src/content/docs/ai-gateway/configuration/caching.mdx

@@ -14,6 +14,7 @@ Enable and customize your gateway cache to serve requests directly from Cloudfla
 :::note
 
 Currently caching is supported only for text and image responses, and it applies only to identical requests. 
+
 This is helpful for use cases when there are limited prompt options - for example, a support bot that asks "How can I help you?" and lets the user select an answer from a limited set of options works well with the current caching configuration.
 We plan on adding semantic search for caching in the future to improve cache hit rates.
 :::