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

@@ -1,22 +1,34 @@
----
-license: other
-license_name: mg0-2.0
-license_link: https://github.com/Xtra-Computing/ModelGo/blob/main/MG_licenses/V2/MG0-2.0.txt
-language:
-- en
-pipeline_tag: text-generation
-base_model: Qwen/Qwen2.5-7B-Instruct
-tags:
-- chat
-library_name: transformers
----
-
-```
-@misc{XtraGPT,
-    title = {XtraGPT},
-    url = {https://huggingface.co/Xtra-Computing/XtraGPT-7B},
-    author = {Nuo Chen, Andre Lin HuiKai, Junyi Hou, Zining Zhang, Qian Wang, Xidong Wang, Bingsheng He},
-    month = {March},
-    year = {2025}
-}
+---
+license: other
+license_name: mg0-2.0
+license_link: https://github.com/Xtra-Computing/ModelGo/blob/main/MG_licenses/V2/MG0-2.0.txt
+language:
+- zho
+- eng
+- fra
+- spa
+- por
+- deu
+- ita
+- rus
+- jpn
+- kor
+- vie
+- tha
+- ara
+pipeline_tag: text-generation
+base_model: Qwen/Qwen2.5-7B-Instruct
+tags:
+- chat
+library_name: transformers
+---
+
+```
+@misc{XtraGPT,
+    title = {XtraGPT},
+    url = {https://huggingface.co/Xtra-Computing/XtraGPT-7B},
+    author = {Nuo Chen, Andre Lin HuiKai, Junyi Hou, Zining Zhang, Qian Wang, Xidong Wang, Bingsheng He},
+    month = {March},
+    year = {2025}
+}
 ```