Add conversational context support to the list of features (#23457)

## Description

DMR now supports contextual conversations 

## Related issues or tickets

https://docker.atlassian.net/browse/ENGDOCS-3016

## Reviews

- [ ] Technical review
- [ ] Editorial review
- [ ] Product review

Signed-off-by: Usha Mandya <[email protected]>

Author: usha-mandya

content/manuals/ai/model-runner/_index.md

@@ -38,6 +38,7 @@ with AI models locally.
 - Run and interact with AI models directly from the command line or from the Docker Desktop GUI
 - Manage local models and display logs
 - Display prompt and response details
+- Conversational context support for multi-turn interactions
 
 ## Requirements