feat(ifr): update bring your own model documentation

Author: reda-maizate

pages/managed-inference/reference-content/supported-models.mdx

@@ -51,7 +51,11 @@ Your model repository must include:
    * If your are fine-tuning an existing model, we recommend you use the same `tokenizer.json` file from the base model.
  * A chat template included in either:
    * `tokenizer_config.json` as a `chat_template` field, or
-   * `chat_template.json` as a `chat_template` field
+   * in the file `chat_template.json` or `chat_template.jinja`
+
+<Message type="tip">
+If you have both a `chat_template` field in the `tokenizer_config.json` and a chat template file, the chat template file will be used.
+</Message>
 
 #### Supported model types