Update readme

Signed-off-by: Jael Gu <mengjia.gu@zilliz.com>

README.md

@@ -42,6 +42,13 @@ The model name in string.
 The default model name is "bert-base-uncased".
 
 Supported model names:
+<details>
+<summary>Test</summary>
+
+  * a
+  * b
+</details>
+
 - [Bert](https://huggingface.co/docs/transformers/v4.16.2/en/model_doc/bert)
   - bert-base-cased
   - bert-large-cased