Improve language tag

Hi! As the model is multilingual, this is a PR to add other languages than English to the language tag to improve the referencing. Note that 29 languages are announced in the README, but only 13 are explicitly listed. I was therefore only able to add these 13 languages.

README.md

@@ -1,14 +1,26 @@
----
-license: mit
-language:
-- en
-base_model:
-- Qwen/Qwen2.5-32B-Instruct
-pipeline_tag: any-to-any
-tags:
-- medical
----
-# HealthGPT
-Welcome to the model card for **HealthGPT**. This model is developed for unified multi-modal medical tasks.
-
+---
+license: mit
+language:
+- zho
+- eng
+- fra
+- spa
+- por
+- deu
+- ita
+- rus
+- jpn
+- kor
+- vie
+- tha
+- ara
+base_model:
+- Qwen/Qwen2.5-32B-Instruct
+pipeline_tag: any-to-any
+tags:
+- medical
+---
+# HealthGPT
+Welcome to the model card for **HealthGPT**. This model is developed for unified multi-modal medical tasks.
+
 For detailed imformation, please visit our [GitHub repository](https://github.com/DCDmllm/HealthGPT).