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

@@ -1,13 +1,25 @@
----
-license: other
-license_name: qwen-research
-license_link: https://huggingface.co/Qwen/Qwen2.5-3B-Instruct/blob/main/LICENSE
-language:
-  - en
-base_model: Qwen/Qwen2.5-1.5B-Instruct
-base_model_relation: quantized
-library_name: mlc-llm
-pipeline_tag: text-generation
-tags:
-  - chat
----
+---
+license: other
+license_name: qwen-research
+license_link: https://huggingface.co/Qwen/Qwen2.5-3B-Instruct/blob/main/LICENSE
+language:
+- zho
+- eng
+- fra
+- spa
+- por
+- deu
+- ita
+- rus
+- jpn
+- kor
+- vie
+- tha
+- ara
+base_model: Qwen/Qwen2.5-1.5B-Instruct
+base_model_relation: quantized
+library_name: mlc-llm
+pipeline_tag: text-generation
+tags:
+- chat
+---