update readme

README.md

@@ -589,6 +589,9 @@ datasets:
       # For `completion` datsets only, uses the provided field instead of `text` column
       field:
 
+# Saves the desired chat template to the tokenizer_config.json for easier inferencing
+# Currently supports chatml and inst (mistral/mixtral)
+chat_template: chatml
 # Axolotl attempts to save the dataset as an arrow after packing the data together so
 # subsequent training attempts load faster, relative path
 dataset_prepared_path: data/last_run_prepared