Update README.md

Clarified prompt format

README.md

@@ -13,6 +13,8 @@ license: apache-2.0
 
 This repo contains a merge of pre-trained language models created using [mergekit](https://github.com/cg123/mergekit).
 
+The model prefers ChatML formatted prompts. The addition of Violet Twilight at low weight tempers the Magnum Consolidatum tendency toward lengthy generated responses.
+
 ## Merge Details
 ### Merge Method